[Undertale x AUs gif] across worlds

Look at Sans and the AUs that spawned all over the internet. ... Okay, except for one of them that I just sneaked in because I can.

Papyrus: sallaria.deviantart.com/art/Un…
Frisk: sallaria.deviantart.com/art/Un…

Can you name them all? (or at least eight of them because there's only one other picture for one of the Sans-es)

OT!Sans from Outertale by Mimi
UT!Sans from Undertale by Toby Fox
UF!Sans from Underfell by a group of unnamed people (btw, is the main blog down? it keeps asking me to put in a password :/)
Omega/Seraphim/Toucan!Sans from Undertale: The Thought by tratserenoyreve
FT!Sans from Fantasytale by Maddie
US!Sans from Underswap by popcornpr1nce
Tracer!Sans from crossover with Elsword!Add by yours truly (lel)
Gaster!Sans by borurou
Error!Sans from Errortale by loverofpiggies