Lots of databases offer time travel / historical querying, including datomic, MySQL, Postgres, etc (plugins required in some cases).

Dolt's unique functionality isn't time travel, although it has that. It's version control, i.e. branch and merge, push and pull, fork and clone. A bunch of database products give you some of this for schema migrations, but Dolt is the only one that does it for table data as well.

I think TerminusDB does that as well.

Yup, TerminusDB has a very similar set of capabilities, just for a graph DB instead of SQL / relational. Very cool product if you're in the market for a graph DB.