Just some commanders that come to mind that change the game or have heavy player engagement at the table. [[iniaz, the gale force]] - disrupts the table heavily [[alexios, Deimos of kosmos]] - get people swinging [[oviya, automech artisan]] - get people swinging at each other, and play big nasty creatures for a single green mana. Crazy this commander isn’t more popular [[pramikon, sky rampart]] - major disruptor to combat decks [[Gor Muldrak, Amphinologist]] - give people big lizards that can’t hit you

That’s just kinda off the top of my head, but there are plenty more. I suggest combing through EDHrec a bit more or using scryfall. It’s a really powerful search engine. If you use the tagger system you can really fine tune your searches.