Thanks for all the interesting replies! Given the response, I decided to make a whole community around this, hope you’ll consider joining!
If you liked this thread, you might like: !likethismaylike@lemm.ee
Remember, if you’re on a different instance you may have to search the url first: https://lemm.ee/c/likethismaylike
A lot of symphonic metal bands are like that. On the top of my head, you could check out Nightwish, Within Temptation, Epica and Unleash the Archers.