Currently, I am using Moonrise (Starlight replacement), Particle Core, and ImmediatelyFast

Does the mod have any overlap feature-wise with those two mods (or any similar mods)?

Not sure, probably not. This mod is a "nitpick"-optimization-ish mod

The only known overlap is entity data optimizations in 1.20.4 and below with Lithium, but they don't conflict