Yeah, not sure. It's very much Donkey Kong Country-style, with more or less the same rather heavy inertia physics, which is not at all typical on GB platformers (Wario Land even has zero inertia). DKL has DKC2 style rope climbing too (well I guess it's technically Donkey Kong Jr inspired to begin with).
I played the shit out of that game back then, but wow, this was a painful game to play on the original game boy. They tried making it look like DKC, but all they did was making it a dark green mess, especially in the jungle levels. A light outline around characters would have made the game a lot more tolerable, but I'm sure they decided it was not looking "Donkey Kong Country" enough.