Which yaoi pairings were intended in Kingdom Hearts II because I heard AkuRoku SoRiku and XemSai were the three main ones

There were no intended yaoi pairings! This is a Disney game for heaven's sake. Sora and Riku both wanted Kairi!
If u are refering to yaoi fanz intended yes thos are a good portion of em...and u can mix and match <3

Well with AkuRoku and SoRiku, Tetsuya Nomura wanted the fans to be able to interpret the relationship as just friends or lovers. I'm all for them being lovers!! X3 But actually if you play the Japanese version (you have to understand Japanese) more people think they are lovers cuz they are all like lovey dovey even more especially in final mix! Mmmm yaoi..... XDDDD I LOVE AKUROKU!!!!!