Not the best at teambuilding, but here goes nothing.
Diglett-Alola @ Life Orb
Ability: Tangling Hair
Level: 5
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Earthquake
- Sucker Punch
- Rock Slide
- Iron Head
So this is meant to be an all out attacker, this set isn't particularly good compared to Diglett, as it still has below mediocre defenses, and a slower Speed stat and not as good abilities making it less viable. The only good I can see in it is as an all out attacker. Earthquake is it's primary STAB move hitting with decent damage, Sucker Punch to pick off low health opponents, Rock Slide is used for coverage against Flying-, Ice-, Bug-, and Fire-types, such as Vullaby and Cubchoo. Iron Head is it's other STAB move due to it's Steel typing, which actually, in turn for the worse, gave it MORE weaknesses, as only Ground had 3 weaknesses, now Alolan Diglett has 4, and these 4 are actually very common types. In conclusion, Alolan Diglett is not as good as it's counterpart, and it shouldn't really be used in any team as it is mostly outclassed by other Pokemon unless there is a more creative set for this Pokemon. I LOVE THE HAIR THOUGH!