here are my artist entries
for my reference:
Nonrarity: Colored sclera, weight edits, claws, teeth
Basic: Axolotl gills, axolotl tail
Common: Regular fin edits, ear edits, shark tail, hair edits, fur length edits, catfish whiskers, seahorse tail, extra gills, eel tail
Uncommon: Betta fin edits, betta tail edits, manta ray tail, manta ray wings, lionfish spines, dolphin tail, blowhole, octopus tentacle tail
Rare: Narwhal horn, swordfish mouth, anglerfish bulb, teeth outside the mouth, larger jaw, multiple eyes, squid tentacle tail, extra limbs (crab), extra limbs (octopus), extra limbs (squid)
Mythical: Mermaid half, transparency, glowing parts