If I did not have AirPods Pro, I would not buy the Belkin 3-1. Your paying more for the included AirPods charger, and that recessed spot can only be used to charge AirPods. I would want a 2-1 charger if I was only charging iPhone and Watch. Looks like your all set with Your Apple MagSafe chargers.
If your looking for another option, I won’t mention anything specifically, but personally, I like Apple, Belkin, Mophie, Anker for iPhone/iPad/Watch/AirPods charging. I might have missed a brand or two there. These brands can cost more, but they seem to be more optimized for Apple products. Apple’s own chargers are best, the most optimized for their own products. For example, they had a firmware update recently for their MagSafe Charger. The charger just updated on its own wirelessly while it was charging my phone overnight. When I see this attention to details, it makes me hesitant to buy any other wireless charger but Apple’s own. My new $150 Belkin charger can’t do that, and Belkin is the second most optimized brand of chargers for Apple products.