Here's a list of who get's what
Squall: Alexander, Bahamut, Eden

Zell: Ifrit, Pandemona, Brothers

Rinoa: Shiva, Doom train

Quistis: Carbuncle, Cerberus, Diablos

Irvine:Quezacotle, Tonberry, Cactaur

Selphie:Siren, Leviathan
I hope that helps!