🌊: Open adoptable/s
🌀: Some open adoptables, some closed adoptables
☄️: Closed adoptable/s
💧: Not an adopt

OTA: Offer to adopt
BTA: Bio to adopt
NTA: Name to adopt
DTA: Draw to adopt (extremely rare occurrence)
FCFS: First come, first serve
NGTA: Name and gender to adopt

Other adopt systems may occur.