Regarding fight music, Giant Apes on Soundcloud has recently put out an album with crazy-good orchestral tracks. On Soundcloud, they are listed as Really Slow Motion and Giant Apes; I think it's a collaboration thing.
For greater variety, I have discovered this composer who goes by Mabovsky. Need instrumental epic fantasy music? epic sci-fi music? epic horror music? Mabovsky has it all, amazingly prolific.
Speaking of horror, the old standard is Midnight Syndicate. This pair of composers created the official Vampire: the Masquerade soundtrack years ago, but their blood & butter is making soundtracks for movies which never existed like Carnival Arcane. For moody atmospheric, no one on Soundcloud does it better.