Everyone knows the popular ones so here’s a shout out to a few that are perhaps not so commonly known:
My most used can no longer live without app:
I’ve found Routines to be one of the most important features with Samsung - set up a car mode to auto run when charging AND connected by bluetooth to a specific device …and have it set the brighness dependant on the time of day. Turn location off completely unless certain apps are opened. Protect your battery if charging overnight …but go into power saving mode should charging stop for some reason. I find it invaluable. Even more powerful when used with Routines+ add-on
Looks OP has solutions but it looks like Routines also has options to separate sound on app specific basis
I use this Square Jellyfish tripod mount which screws onto any standard tripod.
It is spring loaded but unless you buy a phone specific mount I doubt you’ll find one that isn’t. It’s not too stiff so it’s easy to insert your phone.
It opens quite wide - handles my Note 20 Ultra 5G plus Poetic Revolution rugged case with no issues.
Simplest option is probably speak to sales staff & specifically ask about the set up process. It might be worth phoning a couple of reputable TV vendors as they may have more understanding than the spotty herberts in the sheds at the local retail park.
I last bought a TV outside of your preferred time frame but back then Panasonic made, what for my needs, was the best panel for the price & didnt insist on having internet in order to set it up (no idea whether this has changed with current generation models)
It doesnt help with your hdmi concerns, but what about blocking the TV at router level or restrict it by putting it on VLAN/guest network then disconnecting it from the internet forever once set up.is complete?