Ah, I was aware of the different Fabric (Yarn) mappings and internal names (due to the few mods like architectury) but I think Forge switched over to Mojang's?

> As of 1.16.5 [(2021)], Forge will be using Mojang’s Official Mappings, or MojMaps, for the forseeable future

Pretty sure this applies to NeoForge as well: https://neoforged.net/personal/sciwhiz12/what-are-mappings/