Kiteium

there is no need to install this mod after 1.20.1

Kiteium is unofficial port of Starlight (fabric). This mod is 11.2% better than Starlight (Fabric)'s light engine and also provides Starlight (Fabric) to newer versions.

This mod is dedicatedly build for players or servers who are suffering from Minecraft 's default light engine.

This mod is also available on Modrinth but it is still in under review - link

PlanetMinecraft