For my mail I still stick with the Apple app, nothing more needed for me.
I’ve started using an Apple Watch a little more so I’ve added Fitness to my Home Screen.
I picked up an Xbox Series X so have the Xbox app now so that I can manage my games and install new ones when I’m away from my console.
Craft is a fairly new addition that I’m using with a view as an Apple Notes replacement. At the moment I’m using it for research and learning. I’ve got a section for DIY projects and another for my own development, so skills I need to learn etc with links.