From what I've seen, the best "casual" commanders are in Naya. You have rather fun cards such as Mayael the Anima, Gishath, Sun's Avatar, and Rin and Seri, Inseperable. I wouldn't totally mind if I was trampled to death by an army of thicc bois (the cattos) or dinos. Go for Timmy stuff, and people really like dying to that 10 cmc spell that you finally get to cast.
Mayael the Anima is yet another commander I've been interested in. The problem with big Timmy commanders like Mayael is most of the best big creatures are just too expensive for me ($$ wise). Obviously, there are options, but having to opt out of cool, splashy cards like the Eldrazi titans, Gisela, Blade of Goldnight, Terror of the Peaks, Xenagos, God of Revels, etc. etc. just feels bad.
As a big Timmy gamer, I totally get this. My
Mayael the Anima deck has been a huge work in progress. It's always fun to play against, but I can't really compete against anything higher than a 5 or 6 without the big splashy etb and anthem effects; and, they're just too expensive, usually at a solid $25 dollars a pop. So, what I've started doing instead is finding similar Timmy style commanders that often get used to min/max their abilities instead of just having fun with them, and flipping the meta. Like, I built a
Rhys the Redeemed big tokens deck without almost no elves. It's not phenomenal, but it's got teeth, and people think it's hilarious when you populate like 4
Giant Adephage tokens or just a bunch of oozes and squirrels. Also, restricting decks for hilarious payoffs keeps a playgroup engaged against even some of the roughest commanders. For example, my friend built a permanents only
Lord Windgrace deck so that he could play
Primal Surge, and I just always want to see that go off.