A soulmate pair has the others name and a symbol of their quirk on their forearm. It glows their hair colour when they are close so you know who they are.
Ships
Shinkami- Hitoshi Shinso and Denki Kaminari
Kirideku - Eijiro Kirishima and Izuku midoriya
Todobaku - Shoto Todoroki and Kasuki Bakugou
Erasermic - Shota Aizawa and Hizashi Yamada
Dabixtomuraxhawks - Touya Todoroki and Tenko Shimura and Keigo Takami
Togaxizumixuraraka - Toga Hikimo and Ochaco Uraraka and Izumi Midoriya
HimarixJiro - Himari Bakugou and Kyōka Jirō.
All for one and all might - Ace Shigaraki and Toshinori Yagi
Alphas
Eijiro Kirishima
Shoto Todoroki
Touya Todoroki
Kaigo Takami
Toga Hikimo
Izumi Midoriya
Shota Aizawa
Hitoshi Shinso
Himari Bakugou
Ace Shigaraki
Omegas
Katsuki Bakugou
Izuku Midoriya
Denki Kaminari
Tenko Shimura
Ochaco Uraraka
Kyōka Jirō
Hizashi Yamada
Toshinori Yagi