We talked a lot about whether Karn was also supposed to be an artifact but decided that for developmental reasons, we didn't want that (too many shenanigans with artifacts)
Retailers like TCGplayer, Card Kingdom, or even Amazon tend to list these special versions under the cards name, so you can search for something like Doubling Season anime art or Smothering Tithe anime version and see whats available
These are all broad generalizations and color identities have been muddied over the years
But if youre doing a Chaos Draft, keep an eye out for this card
If a Clone says it enters as a copy of any creature on the battlefield, you simply choose a creature without targeting it, which lets you copy creatures with hexproof, shroud, or ward with no issues
Regardless of whether or not you choose to play these types of cards in your own decks, I hope that you continue to enjoy the Commander format