Miracle of Sound is a youtube channel that makes original fan music based on popular movies, games and TV shows. Here's a sample of their music:
They also have somewhat calmer music, but most music is similar to the Batman song above.
The type of song I like is the music that's similar to the above: the Arkham knight song, the Dragon Age Inquisition song, the Witcher 3 White Wolf song,... Basically a reasonably epic instrumental, meaningful and clear lyrics, but not too much bass or deep notes.
I'm trying to find more music like this on Youtube, but I don't know how to describe it. I've tried Motivational music and Epic music, but both of them are not quite what I'm looking for (although they're somewhat close). The thing is that I'm looking for short tracks of less than 5 minutes, and most videos I find are like 3 or 4 hour remixes.
If anyone can give me something similar to these songs, I'd be grateful.