You do want to use a 12 v tv. Plugging a tv into an inverter is an energy hog unless you live on shore power. While you can use any 12v tv on your boat, ten years ago or so when we bought our tv we paid the premium for a Majestic
Majestic LED222GS 12 Volt 22 Inch LED TV FHD with Global TV Tuners, DVD, USB for Multi Media, MMMI for iOS and Android, Ultra Low Power Current Draw
because their equipment is designed to use low amps and be very tolerant of low voltage conditions, thus ideal for marine and RV use. It has worked perfectly for us, providing a good picture even when the interior lights are getting dim...
You might not necessarily have to go with a TV specifically marketed as 12v. You might be able to find models with an external AC adapter that happens to feed it with 12v DC. That’s what I did a while back for my RV, with an Insignia NS-19E310NA15. If 12v non-inverter operation is important in your case.
Installed a Supersonic 12v 22" tv from WalMart in 2019 at the wife's request. It fit perfectly above the nav station and is completely out of the way. Nothing bigger would fit there. I typically leave it unplugged to keep it from becoming a vampire drain on the system, but when on the LCD uses very few aH. Since its inside the cabin I haven't noticed any issues at all in 2 years with corrosion, etc. It is advertised as "compatible with RVs and boats", though I strongly suspect that is only due to it running off of 12v, and nothing to do with being marinized. Picture quality is very acceptable, and I can plug an iPad or iPhone directly into it to watch Netflix, etc. I run its audio out to the stereo aux and get good sounds from the cabin speakers.