Tiaral

In terms of gameplay, I find the winged and horned creatures more appealing.

The Gravenroyts are also interesting. They are quite powerful mages.
The last ones on the list also have the potential to become strong... But their style is a bit different.

Familiar. The player can create a creature or creatures (depending on their strength) at the start of the game, with the ability to summon it (them) at any time (this is an action). The abilities can be very diverse.

You can create a giant spider that will stand over the Nymph and block it from sunlight, while simultaneously spitting poison...