So you want big font? What about HRM, data collection, and GNSS?
Running
A place for runners.
Yes, HRM and GPS for run, HRM & laps for pool swim. Not to much clutter on the screen, I would not mind pressing a button to cycle through data. For what I read MIP would be a better choice over amoled
Polar?
I’m happy with my Amazafit balance and I can see the main screen stats without my glasses.
Privacy means something different to everyone, so it's really up to you as to whether you consider the privacy policies of these companies good enough. I'm not aware of any company that meets stricter interpretations of privacy; they all collect and store data of some kind. If you're after that level of privacy then your best bet would be to find a watch that can store data locally without connecting to the internet or needing to sync with an app. I use my Forerunner 55 like this.