With the 2nd Gens, I was thinking something like Black Coraline 2nd Gen or Smiling Halloween 2nd Gen for this one:
as it's got the Coraline markings and also has the smile which is (so far) unique to it within its litter. There's also the white tail, which stands out from the rest of the litter.
The redder one takes more after the Blood Demon, so maybe something like Dark Blood 2nd Gen, but that one's a bit harder to pin down since it doesn't have any one feature that really jumps out as an identifying mark compared to the others. Could also just be boring and call it the White-Fronted Halloween 2nd Gen. X3