I'm a beginner when it comes to classical music. Could you recommend some music similar to what I like?

Hi, I'm a beginner when it comes to classical music. I mostly listen to the music my boyfriend likes. But there are some pieces that he likes that I really enjoy; could you recommend some similar ones?

Here's a list of some pieces I like:
Poème Symphonique for 100 Metronomes, György Ligeti
The Banshee, Henry Cowell
Ex Contrario, Giya Kancheli
Metastaseis, Iannis Xenakis
Concerto Grosso No. 1, Alfred Schnittke
Black Angels, George Crumb
Symphony No. 2, Arvo Pärt
Ionisation, Edgard Varèse
Cantus Arcticus, Op. 61, Einojuhani Rautavaara
Leino songs, Kaija Saariaho
Pines of Rome, Ottorino Respighi
Battalia à 10, Heinrich Ignaz Franz Biber
(The last three songs are the most different from the others I usually listen to because of my boyfriend, but I still like them.)