There's a few sort-of-maybe working versions that you'll need to fenangle a bit into working properly
Driders are the easiest one.
Ramas Obarskyr made a new phenotype for elves with Driders based off of Luna C and H20Rat's driders (The people who made the Weimec). You'd need to fenangle around with the Phenotype 2das and the TLK files, but outside of that this is pretty much plug and play
PC Maniac made a pretty decent Centaur batch, but they use the mounted animations and might not look 100% all of the time.
Hardpoints looked to have been working on some using the standard player animations, but has since left the community
Mermaids are a bit tough. The classic way is to use Lisa's mermaid tail clothing bit, but I've always found the tail a bit small.
1whocan'tscript used a modified dragon tail which is bigger, but may not be to all tastes
Finally, nothing on the Lamia side. The best I can think of would be taking
Fantu's Ophidians and building off that. Problem is I'm 90% sure that's just males, so nothing for female lamia.