Since you mentioned it, I was always curious if the team behind TablePlus were/are connected to the team behind Postico [1]. The UIs for both (at least before Postico 2) are almost identical.
I suppose the tooling for databases (or the expectation from users) means they all end up sharing a similar UI and where and how various features are implemented. Not too unlike word processors or spreadsheet software!
Somehow not really liking the fork.