I looked at /e/ extensively before buying a new phone and ultimately settled on GrapheneOS. I'd much prefer the de-Googling to be combined with a focus on security, where Google has admittedly done some important work for Android. I'm sure it's not quite as functional as /e/ given the lack of integrated Google services and other bits and pieces, but a surprising number of apps work perfectly without these things and I rarely miss them.
I would also recommend Shelter for a work profile for non-open source apps, which one can install on one of the Play Store clones such as Aurora.