"Most DBs" by what metric? If you count them as products, you're probably correct. But I seriously doubt that is true when adjusted for usage - say, number of requests per second, globally, across all deployed databases worldwide.

(in fact, I suspect that SQLite would win that contest handily.)

I think that statement should be strongly disputed. Most businesses still have a SQL database at the core of their stack. NoSQL is still definitely the exception rather than the rule.

I'm not sure I could disagree more.

I'd phrase it more like "ORMs are as popular as they always were, most DBs today are SQL DBs, same as always, and the only recent change in the last 10 years is people have stopped speculating that NoSQL is going to replace SQL DBs, and accepted they will be, at most, specialised tools for niche uses.".

Obviously that's just my subjective opinion, but the Stack Overflow 2020 dev survey (https://insights.stackoverflow.com/survey/2020#technology-da...) has it MySQL, Postgres, MS SQL Server, SQLite, MongoDB. DB Engines (https://db-engines.com/en/ranking) has it as Oracle, MySQL, MS SQL Server, Postgres, MongoDB, and in both cases there's a STEEP falloff after the top couple entries.

I'm not sure either of those is a super reliable source, but I don't know of any better ones.