What music genre is The Gentlemen's soundtrack?

So I like listening to the soundtracks of movies and series I finish watching, and one of the ones I ended up liking the most is the soundtrack of the series "The Gentlemen".
I am however very much uninformed when it comes to music genres so I can't really pinpoint it specifically.
Could someone help me? Here's one track that I've been liking in particular.
This one too.