These are the different C1 norns now avalible ([] shows C2 type):

Type 1[a] norns are the bald ones. Males are darker and have horns. Females are lighter.

Type 2[b] norns have white hair and green armbands. Males have floppy ears.

Type 3[c] norns are brown. Males have a mohawk and horns, females have blond hair.
Santa '97[d]. Same as Santa '96, just different sprites. This one has the Sprites to frown and be angry, just like a normal norn.

Type 4[e] norns are the purple mountain norns.

[f] Forest norns come with the life kit. They resemble type 4 norns, but have purple spiked hair and multi colored legs. Males have a dreamy look and like to solve things peacfully. Females have higher intelligence and memory but stress ages them rapidly.

[g] Ron-norns are the ancestors of the first norns. They survived all these years and males have a fight or flight genetic code that gives them an edge against grendles. Females get very angry when surprised or frightened. The original was drawn with a strange pallet(, they look normal now.

Santa '96. Born with just adult sprites, but still takes full time to grow. Normaly anlways happy, can't frown or be angry:) You can get sprites for female santa norns and male santa norns that have sprites for baby to adult ages.
Bunny Norns. Made by altering the sprites of the female Santa '97. There wasn't really a female santa '97 untill now. Her male desendents will have santa '97 sprites.

Grorns. It's really a norn, but it uses the grendal spr file. Otherwise it learns and talks just like a Norn. Desendents can have the gendal body parts too, can look really weird.