I think Wordle requires a pretty extensive vocabulary to be played successfully. Though you could say the same thing about Worldle: it doesn't require much external knowledge beyond basic geography.

For Wordle, a decent vocabulary and also some intuition about letter frequency, the likelihood of letter combinations in various positions, etc. For this "basic geography" I guess but that would include knowing the names and approximate locations of some fairly obscure and not distinctive looking countries. (That said, if I cared enough to do so, I could probably bone up on my geography for a couple hours and I could probably do better.