None of those are really needed, one can use plain LOS and use microG on top of it (as opposed to some years back when LOS devs opposed to it) without the need for LOS for microG neither /e/OS. However if this interests you perhaps calyxOS might interest you, which after several months came back with new releases, it’s like LOS with microG plus the ability to unlock/lock the bootloader which LOS doesn’t offer neither its devs seem interested on providing for the phone where that can be offered. Then there’s grapheneOS, using google services under a strict sandbox environment or container, however that’s not de-googling is it?