If you learn some of these, you'll also see how interconnected many of them are.

A sheet bend and bowline knot are both wildly useful. But a bowline is just a single rope sheet-bent (sheet bended?) back onto itself! And a trucker's hitch is just a slip knot where you creatively use the slipped loop as a pulley.

I’d add the adjustable grip hitch to your (very good) list.

A round-turn and two half-hitches is also useful.

And a highwayman's hitch, just for fun

I rarely use anything other than a bowline, midshipman's hitch (and variants, very useful) or zeppelin bend.

A reef bend also works, but has many ways to tie it wrong.

The most important thing is to know when to use what.

Honestly like 99% of the time when I join two ropes I just use an overhand knot, sometimes with a stopper so it doesn't roll. It's pretty normal in climbing and supposedly bomber (https://www.youtube.com/watch?v=QGqGlFc3oFs). Agree most important thing is using them right.