To throw my suggestion in there, the FitOn app[1,2] is free and separates exercises into categories and intensities, and you can even sort by time if want.

The instructors are pretty good, and if you just want to try out Yoga for a week or two and see how difficult it can really be I can recommend it.

I normally do 15 minutes over lunch, and I can recommend the "Flamingo Flow" for balance, and "yoga core" for core strength

[1] Android: https://play.google.com/store/apps/details?id=com.fiton.andr... [2] iOS: https://apps.apple.com/us/app/fiton-workouts-fitness-plans/i...