I've been thinking of other possible Alolan forms... I apologize if some are repeats.
Tentacool line - Poison/Electric. Jellyfish stings.
Jynx - Grass/Fire. Hula dancer Jynx.
Stantler - Ice. Merry Christmas.
Sandile line - Ground/Water or just Water. Finally becomes true alligators/crocodiles.
Vanillite line - Ice/Something. I just want other flavors.
Tynamo line - Electric/Water. They are eels after all.
Also, I just had a thought... What if the Strange Souvenir was an Alolan form of... le gasp! Probopass!!!
Pleeease tell me you're imagining a red-nosed Stantler pulling a team of Winter Sawsbuck lmao. I love it.
As for Vanillite...
Ice/Rock - Rocky road
Ice/Fairy - Strawberry
Ice/Grass - Mint