I don't think there's a non leopold set.
Too bad you missed the vortex drop, that was pretty decent and affordable.
TBH I don't really think the plastic thing would really bother you too much and the filco caps light indicator is in the top right corner not under a keycap anyways.
The set also includes a stepped capslock I think its officially for the FC660 though. Dunno about the compatibility with other keyboards, since I'm in San Diego right now I can't test it
Also look into Ducky, maybe some DSA sets.