Simplistic as always, the Greenskins pretty much stick with just the two gods, Gork and Mork.
There's also Grimnir, patron of the Slayer cult, a warrior who is imitated by shamed Dwarfs who shave their beards and seek death in battle to atone for their sins. The Dwarfs prefer to pay homage to their own ancestor gods, chief among them Grungni, the first miner and smith, and Valaya, a goddess of runes and homeland, who both have dwarfholds named after them. There's also Morr, god of death, Manaan, god of the sea, Verena, goddess of knowledge, and Taal, god of nature, who is worshipped in both Talabheim and La Maisontaal Abbey. In the south Myrmidia is more popular, a civilized goddess of strategy who lends her name to the Border Prince capital of Myrmidens. Ulric is a bloodthirsty god of wolves, winter, and battle who is popular in the north, particularly with the Middenheimers who will be an early thorn in the side of Empire players.
Ranald is a trickster god, a thief who is said to have attained immortality by tricking Shallya, a goddess of healing and mercy, and you'll see his name referenced by several magic items. You might be familiar with Sigmar, the first Emperor who ascended to godhood and is still worshipped in his homeland, and the Lady of The Lake revered in Bretonnia, but there are a whole pantheon of shared human gods in addition to the big names.