I'll leave this up to your discretion bc different canons, but Tidus is a dream/summoning of a human being. That is to say, he is practically human in every sense of being human in his canon, except his existence relies on having a summoner/a source to keep him around.

So he's fairly human (or comes off as such) in every sense except of This One Weird Trick. It's never really noticed in his canon, even by those who use summons, etc, though I'm fine with Ryo noticing something off about him, or whatever you think makes sense!

He also does have and use healing magic, idk if that's relevant! He's been getting better at using it due to his time on the train.

Edit: ah, I realise Ryo may be able to pick up the higgledy with Tidus as it sometimes hangs out in his heart. If he would, I'll remember to note in our threads!