On PDB, he is typed as EII, but he kinda seems to have more Se suggestive than polar.
https://jujutsu-kaisen.fandom.com/wiki/Yuta_Okkotsu
https://youtu.be/-7DAwKzBqYA
https://youtu.be/WcUhnvJXXs8
https://youtu.be/cae9DzaCnO4
https://youtu.be/cae9DzaCnO4