QWhen playing this follower's On Evolve ability, can I select a card and its alternate-art version with a different name, such as Globe of the Starways and Dark Charisma, and add them both to my hand?

ANo, you can't.

QWhen playing this follower's On Evolve ability, if I select two 1-cost cards and one 2-cost card with different names in my cemetery, can I add the 1-cost cards to my hand?

ANo. You can only add the cards to your hand if all 3 cards with different names cost the same number of play points.

QIf I have 2 or less cards in my cemetery, can I still add them to my hand with this follower's On Evolve ability?

ANo. If you can't select 3 cards in your cemetery, you can't play this follower's On Evolve ability.