As you mentioned your TV will most likely only show a standard HDR indicator rather than HDR10+ etc. And it gets even more difficult with the fallback option as it will fallback to static HDR10 if the optimal condition for HDR10+ is not met. It would be great if you can see the receiving signal information.
To see information about the signal you receive or if there are any improvements in picture quality
- Your TV might have an option to show information about the signal receiving.
- An AVR can do the trick as it should be able to read information about receiving signal (remember to check that your AVR supports HDR10+).
- Compare picture quality by taking 10bit HDR pictures/recording of playback with your TV internal player vs H96+ Pro.
Here is an possibly outdated list of the currently released HDR10+ movies
ALIEN (1979)
BOHEMIAN RHAPSODY (2018)
BAD TIMES AT THE EL ROYALE (2018)
A BEAUTIFUL PLANET (2016)
THE HATE U GIVE (2018)
JOURNEY TO THE SOUTH PACIFIC (2013)
ROBIN HOOD (2018)
WE, THE MARINES (2017)
WIDOWS (2018)
Take a look her for more recent and updated information about UHD releases containing HDR10+:
Blu-Ray.com - List of UHDs that contain HDR10+