The community is still slowly recovering from the collapse of the company but RethinkDB is worth considering in your analysis.
I’ll admit I definitely fell all the way into “loving” RethinkDB. I still have some sticker bundles from a meetup group merch package. It’s been an agonisingly slow recovery from the company’s demise, but I still hold onto some hope that it can recover and become a multi-stakeholder database with a steady development like PostgreSQL for the horizontal scale document database world.