A list currently available GS4 familiar types as compiled by Raelee and her player:

Base types are listed in the top row. The additional descriptors that might appear in front of the base type are listed on the bottom row. To my knowledge those are all wizard-only.

Wyrdlings are obviously incomplete. If you have anything to add to this list, please drop a note to my play.net address as seen on the message boards or simply post there for me.

PS: Thank you to Nilandia for her help in tracking down wyrdlings.

Bat Cat Chameleon Falcon Fox Frog Gyrfalcon Hare Hawk Lemur Mouse Owl Pelican Penguin Pitouhi Ptarmigan Raven Toucan Wolf Air Earth Fire Lightning Water
                                               
large black black long-winged arctic brown (blank) black black bamboo (blank) barn brown crested rusty rock (blank) (blank) arctic (blank) (blank) (blank) (blank) (blank)
fruit calico brown narrow-winged bat-eared bull   broom black-mantled black black barred pink-backed emperor hooded     blue blue          
spotted charcoal dwarf red-footed black green   cape grey-bellied brown brown bay spot-billed king red-brown     bright blue great white          
pygmy ginger forest red-necked blue green tree   mountain grey-headed crowned field crested white royal black     collared grey          
small grey green   desert horned   red red-chested dwarf forest eagle   yellow-eyed brown     emerald            
  tabby grey   grey tree   savanna red-tailed fork-crowned furry elf   little blue crested     green            
  white leaf   kit     scrub spot-tailed fork-marked pocket grass           hooded            
    mountain   red     snowshoe white-bellied golden grey great white           speckled            
    ochre   swift     woolly   grey white grey                        
    spotted             grey-headed   hawk                        
    veiled             mouse   horned                        
                  red-bellied   maned                        
                  red-collared   masked                        
                  ring-tailed   pygmy                        
                  ruffed   screech                        
                  white-collared   snowy                        
                      sooty                        
                      speckled                        
                      spectacled                        
                      spotted                        
                      striped                        
                      tawny                        
                      white                        
                      white-faced                        
                      wood                        
                                               
Bat Cat Chameleon Falcon Fox Frog Gyrfalcon Hare Hawk Lemur Mouse Owl Pelican Penguin Pitouhi Ptarmigan Raven Toucan Wolf Air Earth Fire Lightning Water
                                               
(blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank) (blank)
bare-backed blue-eyed large large disheveled large   black-tailed large greater fat greater large       large black-banded   cloudy-eyed amber-eyed angular angular blue-eyed
little-collar disheveled small ruffled sleek plump   white-tailed ruffled lesser plump lesser ruffled       ruffled black-billed   ethereal crumbling ember-eyed hook-nosed frothy-eyed
long-tailed fat   sleek   slimy     sleek sleek sleek ruffled sleek       sleek black-necked   foggy-eyed crystal-eyed lanky jagged-eared lithe
long-tongued fluffy   small   small     small small tiny sleek small       small blue-banded   lithe dusty red-eyed lanky long-eared
short-nosed green-eyed       speckled                       curl-crested   long-eared dusty-eyed scaled nebulous misty
  long-haired                               fiery-billed   long-nosed large-nosed sharp-eared scaled misty-eyed
  orange-eyed                               grey-breasted   soft-featured rough sharp-nosed silver-eyed sleek
  plump                               groovebilled   white-eyed round-eared smoky spark-eyed small-nosed
  shabby                               ivory-billed     squat smoky-eyed   smooth
  short-haired                               red-billed     stout smoldering    
  sleek                               red-necked            
                                  spot-billed            
                                  stripe-billed            
                                  yellow-browed            
                                  yellow-ridged