Going to come back and edit this even more, but here's a very large list of things I like.

  = something I like in particular

  = something I LOVE in particular

Its safe to assume the more hearts means the more affection I have for it, but don't take it as a priority since I do like everything on this list.

If multiple colors are used then its probably something I really really have a thing for.

Species:
    Demons    
 Deities  
Angels
Humans (could be partially human)
Ghost/Undead
Mouse/Rat
Siberian Husky
Humanoid
Plant monster/Flower humanoid?
DRAGONS
 SEA DRAGONS
 A DRAGON WITH BAT-LIKE/WEBBED WINGS FOR ARMS AND A SERPENT, NO LEGGED BODY 
SERPENTS/NOODLE DRAGONS
Birds (doesn’t have to be a monster or anthro; could even just a regular bird)
Object heads: Monitor/T.V. heads/ screens/ Vintage (old radios, VCR tapes, old gaming consoles, etc.)
Robots
 Anything based off/inspired by mythology/folklore 
(I especially love those from Japanese Mythology, Egyptian Mythology, and any of the Shinto Gods/Goddesses.)

Themes:

 Pirates 
 Ghost/undead pirates 
Divas/superstars/fashionistas/models
Gives a "dangerous" look (ie: looks crazy, psychopathic, etc.)/ bloody/gore design
Priestess/Fortune teller
Egyptian
Broken/cracked/chipped porcelain
Cyberspace (Tron aesthetic?)
Space/Galaxy
Starry Night
  1920's   
   Mobsters/Mafia/Suits  
  Pumpkin (doesn’t have to be a pumpkin headed humanoid)  
Delinquents (anything that gives a "Greaser" vibe)
The Four Seasons (Spring, Summer, Fall, Winter)
   Ocean/Water    
Shades of blue
 JUST BLUE IN GENERAL
did I say how much I love the color blue?
Neon
Pastel, Pastel Goth/Angel
    Monochrome, Monochrome + one or two colors    
Contrasting colors (blue/red, bright/dark, etc.)

Body:

 THICC enough to crush me with their thighs 
 Large and buff (baras) 
 Androgynous
 Curvy
  Tall and skinny/round/curvy  
 Short and skinny/round/curvy
 Chubby
   Heterochromia (multiple colored irises)   
Scars/ Scarred up eye(s)
  Sclera that isn’t white (specifically for non-humans)  
(I usually like it black, but I’d like to see other colors being used)

Aesthetics/other things I like:

  Long hair 
Big poofy hair
  Big painted lips/lipstick 
Floating body parts
(they could be extra floating parts; ex: a third floating eyeball, two extra hands, etc.)
Multiple eyes/limbs/mouths
WINGED CREATURES/ WINGS
HORNS
TAIL(S)
 FANGS/SHARP TEETH  
CLAWS/CLAW FINGERS
Jackets/trench coats
 Revealing/suggestive clothing  
(especially showing off the legs)
Long red dresses with a slit on the side