I've been using the custom chart function at https://rateyourmusic.com/ recently. It allows me to drill down to highly specific combinations of genres, influences and descriptors, such as "instrumental noise rock influenced by krautrock" or "noisy avant-prog influenced by post-punk". Back in the day I discovered a lot of new music from obscure internet radio stations. Recommendation algorithms however have never worked for me, they usually just recommend stuff I already know.