By way of example - lets say that cross country skiing is among the very best fat burning activity you can do (I think it actually is). But, for whatever reason, you just hated it to death. So, no matter how many times you tried, you never got past 20 minutes without stopping and giving up. Yet plodding along at 5mph on a treadmill, which others might find tedious in the extreme, you could do for hours. The one you can do, which works for you, is the one to do. As you have had success in fasted morning cardio that's what you should do. It doesn't matter if others preferred something else or had more success with another activity.
From memory a HUGE preference of pro bodybuilders is the so-called stairmill. Essentially a small escalator or mobile set of stairs they love it for two reasons. 1) Cos it burns the calories and 2) it brings in the glutes. And, as most don't train before breakfast or fasted it's gotta work. There are a ton, more so right now, of training for the Olympia videos across all the classes of athletes on these machines looking battered (with 1 week to go now) but stepping away.