Celtic folk. As well as some indie bands like Imagine Dragons, though only in moderate doses.
No recommendations (at the moment) but I like both of these, games and soundtracks! I dig your taste.Nyx Quest OST Icarus: NyxQuest OST - Icarus - YouTube
Odyssey into the West menu theme: Enslaved: Odyssey to the West - Main Menu Music - YouTube.
You might like this.The playlists on Youtube titled "Epic Music" work well.
Steerpike, I heard about Qntal for the first time thanks to Svrtnsse (if you are reading this, thank you Svrt!) a long time ago. Back in those days, their songs Amor Volat and Blac really inspired me a lot while I was writing my story The Ghost.