Ki multiplier with their base. Speed or any other battle capabilities are not taken into consideration.
SPOILER!!
I will only update this list whenever it is stated in the newest chapter! For Broly it is a bit of a 'mystery' of how strong his transformations get. It will also change over time, so I advise if you aren't up to date don't read this!
*****
(Status Ch. 152)
Normal Saiyans:
Pseudo SSJ: 30x
SSJ Grade 1: 50x
SSJ Grade 2: ??x
SSJ Grade 3: ??x
SSJ Grade 4 (Mastered SSJ): 100x
SSJ 2: 200x
Broly
Ikari: 8x
Non-Full Power SSJ: 100x
Non-Full Power SSJ + Ikari: 100x * 3x = 300x
LSSJ: 450x
LSSJ + Ikari: 450x * 1.5 = 675x
ALSSJ: 800x
ALSSJ + Ikari: 800x * 1.3 = 1040x
LSSJ 3: 3200x
LSSJ 3 + Ikari: 3200x * 1.1 = 3520x