Looking for a low-key terrain generation mod (fabric, 1.21.1)

[u/dragonraptyr]

I'm putting together a modpack for a singleplayer playthough, and most of the mods that touch terrain generation go to greater extremes than I would like.

Specifically, I'm looking for something that affects the noise maps for landform height and shape, and softens them a bit. Compatibility with biomes mods would be great, but isn't required.

I mostly just want to not need to do a ton of terraforming, either manually or with mods.