Someone please help me

I saw this silly nice post before and I saw that there's a lot of characters that I don't have idea who they are-!

Like in the bi tier first is Round 3 girl, and the second guy-? In the gay tier, who's the third guy? In the lesbian tier, if the second one is Sua, who's the last one? And the Top 3 girl, there's any name to her? And in the straight tier, the second one is...?