If the Johto Starters get Alola forms which is doubtful because Megas make more sense. But it should also make sense for said starters to get Alola forms because they have a tropical vibe to them.

Alolan Chikorita/Bayleef/Meganium
Type: Grass/Fairy
Ability: Triage
HA: Overgrow
Base Stats:
45/49/75/49/75/25
60/62/90/63/90/40
80/82/110/83/110/60
Can learn: Petal Dance, Dazzling Gleam, Synthesis, Aromatic Mist, Giga Drain, Earth Power and Focus Blast

Alolan Cyndaquil/Quilava/Typhlosion
Type: Fire/Ground
Ability: Sheer Force
HA: Blaze
Base Stats:
39/67/33/65/40/65
58/84/48/80/55/80
78/104/68/109/75/100
Can learn: Flamethrower, Earthquake, Stone Edge, Energy Ball, Earth Power, Eruption, Rock Slide

Alolan Totodile/Croconaw/Feraligatr
Type: Water/Dark
Ability: Strong Jaw
HA: Torrent
Base Stats:
50/75/64/34/48/43
65/90/80/49/63/58
85/115/100/69/83/78
Can learn: Aqua Tail, Crunch, Agility, Ice Fang, Superpower, Sucker Punch, Aqua Jet, Dragon Dance and Knock Off