The blue and black is definitely Morgan, along with the split red coat with the brown straps above it is Drake, and the black dress/skirt between them looks to be Summer Swimsuit Saber Alter's 1st ascension. I'm blanking on the other 3 though, I assume they're all Fate characters?

MistyWanderer said:

The blue and black is definitely Morgan, along with the split red coat with the brown straps above it is Drake, and the black dress/skirt between them looks to be Summer Swimsuit Saber Alter's 1st ascension. I'm blanking on the other 3 though, I assume they're all Fate characters?

I think the one in the bottom right corner is Medusa.
The black and pink match her outfit perfectly, even if that pink stripe shouldn't be in that place. I also think it would make sense for Medusa of all characters to be dick-on-dick with Medea.

No clue on the left ones yet, though. Especially the black/gold/red one looks like it should be obvious, but I still can't figure it out.
And bottom left looks like Sasaki Kojiro, but since the commentary says 'some futa girls' he should be disqualified.

Edit: I figured out the leftmost. It's Semiramis. The black is more saturated here than it is in or original design, but that clothing pattern is definitely her.
Which leaves us with bottom left corner. Some that I already ruled out are Void Shiki, OG Okita and Medea Lily. I'll look for other possible candidates still.

Edit 2: I think I figured it out. Bottom left corner is most likely Skadi in her third Ascension. Again, the colour of the robe is a bit off from her official design. But the edges of the robe kind of give it away. At least I couldn't find any other Servant who matches it to such a degree.