>>56361310Lapis is stacked with great mons, but it might not be worth it if your team is too weak to rank up Snorlax there.
Taupe has several good mons too, though none of them will really help you in Lapis outside of ingredient mons.
Snowdrop is very bad right now, but Abomasnow and Delibird are the best egg producers in the game, so I'd say it is worth spending a week or two there trying to get a good Snover (Delibird is a single-stage mon, so it takes too much time/luck to get a good one).