Yes, I own PHB, DMG, MM, XGtE, VGtM, SCG...
I‘m using some premade adventures like LMoP, etc., but I often create own modules (e.g. for localization purposes, or to cover realms not common like Dragonlance). I‘ve to admid I‘m not a fan of some adventure paths and like single adventures instead. So it makes sense for me to use the core rules, instead of manually typing in those things.
I can second, racial feats are not in by default. rob2e‘s package has them. I guess you can do well with Zach‘s ‚complete class‘ package. But I don‘t want to fiddle around, search here and there and like it well organized instead.