Adventurer Guild - the most influential of the three guilds with it having the strongest firepower, political power, and economical power. It was founded by three of the five heroes 2000 years ago. It has branches all over the human continent Ashara and is even more powerful than the strongest Empire. It's main combatants and or people are called Adventurers. They do various missions set up by the guild, an individual, or another organization. The missions are usually in the categories of kill monsters, escort a person/s, gather materials, or search a designated area for one thing or multiple things.
The adventurers are graded by a system from F to SSS: (each rank indicates a major increase in power such as an E rank is four times as strong as an F rank, however, there are special cases)(note: this changes with S rank and up)
[F] - the weakest adventurer and is usually capable of only gathering herbs around the outsides of a forest and unable to kill any sort of monster only able to kill normal wild animals.
[F+] - slightly stronger and able to kill the weakest of monsters on the food chain such as Red Eye Rabbits and Goblins by themselves.
[E] - a big leap from F+ and can kill the weakest monsters with ease but will still have trouble if there are a lot of them and are usually the collectors of monster parts for higher-ranked teams.
[E+] - able to handle a bigger amount of weaker monsters and are the equivalent of normal human soldiers in the world.
[D] - where a lot of the adventurers are ranked and is where many consider is the actual starting point of an adventurer.
[D+] - many teams are made at this rank and clear the weakest dungeons which are at E rank.
[C] - at this level, they usually take up either escort or protection missions as it's the most profitable with the least amount of risk.
[C+] - many are party leaders at this rank and usually clear the next levels of dungeons at the D
rank.
[B] - the requirement to be a branch guild leader at the adventurer's guild and is usually mayor of a town.
[B+] - where a lot of adventurers will be stuck in and won't be able to advance further capable of soloing a D rank dungeon and can defeat a C rank dungeon in a party.
[A] - well known and can be granted a noble title such as Baron and are usually hired by other nobles to protect them during a mission.
[A+] - can solo a C rank dungeon and able to clear a B rank dungeon with a party even though there aren't many A+ parties.
[S] - incredibly few and incredibly powerful, only a few thousand out of the few dozens of millions are at this rank and are able to solo clear an A rank dungeon. They have enough power to completely decimate a large city if using their strongest attack and bring minor damage to a low ranking kingdom.
[S+] - the requirement to be a guild leader at the strongest branches in the largest cities and able to take on a few dozen S ranks. Only a thousand have this rank. Able to bring major damage to low-rank kingdoms and able to cause minor damage to mid-rank kingdoms.
[SS] - able to get the noble title Duke and can fight a few dozen S+ ranks by themself. Approximately only 500 are at this rank.
[SS+] - only a few hundred are at this rank and are able to completely decimate lower and mid-rank kingdoms, able to cause major damage to high-rank kingdoms and cause minor damage to the weakest empire. The requirement to be guild leader at the headquarters of the adventurers guild
[SSS] - only a few dozen are at this rank and they are able to completely decimate any kingdom and cause major damage to the weakest two Empires.
[SSS+] - only five have been recorded to be at this rank and they were the five great heroes summoned to fight against the Demon Lord 2000 years ago. They would have been able to cause great damage to any empire and even destroy the weakest one if there was a need.
Crafting guild - the second most influential of the three guilds, the crafting guild has many jobs bunched together in one place such as the blacksmith, tailors, and many more. It was founded by one of the five heroes who had a passion for all things creation 2000 years ago. The crafters need to have a certain strength to make high-rank items such as a flaming sword and are graded by how high-rank of an item you can craft consistently.
Crafters:
[Novice] - only able to craft normal items such as steel swords or knives. Is usually an apprentice of an experienced crafter. The strength of an E rank.
[Journeyman] - able to craft items with minor magical effects such as [Minor Toughness]. Usually, the right-hand man of an experienced crafter and helps around the forge. The strength of a D rank.
[Expert] - able to craft items with major magical effects such as [Major Toughness]. The true starting point of a crafter and is now usually independent. The strength of a D+ rank.
[Master] - able to craft items with supreme magical effects such as [Supreme Toughness]. Well respected among low-rank kingdoms and are common in mid-rank kingdoms. The strength of a C rank.
[Grandmaster] - able to craft items with a lot of enchantments with the limit of 3 supreme magical effects, 5 major and 10 minor. Well respected among the mid-rank kingdoms and are somewhat common in high-rank kingdoms. The strength of a B rank. The minimum requirement to be a guild leader of a branch guild in low, mid, and high-rank kingdoms.
[King] - able to craft items that have a chance of developing a soul along with 5 supreme magical effects, 10 major, 20 minor. Well respected in the high-rank kingdoms and are somewhat common in the empires. The strength of an A-rank.
[Emperor] - able to craft items that can grow stronger as the user grows stronger and a greater chance of developing a soul, along with 1 Divine magical effect, 8 supreme, 20 major and 40 minor. Well respected in all the empires and none can be found in the kingdoms. The strength of an A+ rank.
[Saint] - able to craft items with a 100% chance of developing a soul, growing along with the user along with 2 Divine magical effects, 10 supreme, 40 major, 80 minor. Only 10 exist in all the empires and the strongest empire has 6 of them. The strength of an S rank.
[Divine] - able to craft items with a 100% chance of developing a soul, growing along with the user, able to have an innate elemental affinity along with 3 Divine magical effects, 13 supreme, 80 major, 160 minor. The strength of an SS rank. It was rumored that the hero with the passion of crafting was at this level before he died even though none of his works have yet to been found.
[Celestial] - able to craft items with a 100% chance of developing a soul, growing along with the user, able to have a double innate elemental affinity at low-rank, triple at mid-rank and quadruple at high-rank. Along with 4 Divine magical effects, 15 supreme, 160 major, 320 minor. No crafter has ever been able to reach this stage. Strength of an SSS rank.
Scholar guild - the least influential out of the three guilds, but can be considered as one of the main factors driving civilization forward. Founded by one of the five heroes. This guild contains those who would like to stay out of dirty business and help the world another way. This includes magic researchers, divinators, magic scholars, technological researches, and many more. The scholar guild is usually full of magic users and no one else. The scholar guild doesn't interfere with its people but requires a yearly sum of payment whether it be money, blueprints for a weapon, or a new design for a building (anything that has value to the Scholar guild).
Scholars are not ranked, to be in a position of power you need to have more knowledge (or connections) and this usually means those who are guild leaders of the scholar guild are some of the smartest and most experienced people that currently exist (or that have a lot of money).
(PS: I can answer your questions on this chapter whatever they maybe, but I cannot guarantee a correct answer as I myself am not quite sure about all this and will probably change in the future once a better idea pops into my head)