Third party controllers are aimed at competitive gamers...
...not old geezers. You will probably not find ergonomic relief in a third-party offering.
You should check out the Sony controller first. Also get your hands on an Xbox controller.
A key difference is that the Sony controller has the thumbsticks arranged symmetrically, where the Xbox controller is asymmetric. Different people find them differently comfortable. I’m asymmetric and prefer the Xbox controller, but I know people who find the Sony controller better for them.
Bonus: the Sony controller has a built-in microphone that you can accidentally activate in-game, so everyone playing with you can hear you debating what you’re having for dinner with your spouse, the argument you're having with your children, and the terrible music you listen to whilst playing.