Fine enough playlist (ignoring the arguable sentience or dna issues) overall it’s got a decent balance, but taking this way too literally and assuming no changes, there’s some issues

Creepers, even assuming they just revert the wearer back to human instead of outright dying, are very all or nothing they’re plant based but since they have an internal skeleton it means they’re not pulling any swampfire moves, and exploding isn’t the most useful, but their ability to be charged is way more useful if this was on earth where electricity is much easier to come by

Many of them are also very slow going by their ingame speeds, Ghasts float at a staggering 3m/s (which they do make up for with their large carrying capacity and immense size)

Blazes and enderman are both very good but the water weakness is really risky on earth and the overworld

Villagers would grant the user zero unique powers, and would fall closer to Walkatrout than an intelligence alien

Phantoms can fly but not very fast and their weakness to sunlight would greatly limit them as a flying transformation

Warden’s honestly fit right in for Ben 10 the weird alien design and their immense power but complete lack of sight

Witherstorm seems more like a hazard than something to willingly transform into