So I have been using Mongodb for years now, since I started on V3 of my (Unoffical) BnS API back in 2017 and it has served me well.
it was my first foray into databases in general and for my needs at teh time it suited me perfectly – I could dump in json elements in and pull them out as I required.
This also served me well for my Gw2 API parser and most things I have done up to now.
A numberphiles residence.