Well, I'm always open to suggestions for other composers to look at. I notice you're in Spain? That's a bit of a blind spot for me, I'm sure there's some good Spanish composers that aren't on my radar - most of the ones I know about are much more recent and generally not public domain. I seem to have done a lot of German ones, but that's just what's available to me, not a deliberate choice. (It does seem like the majority of classical music from this time period does come from there, but maybe that's just what's been preserved mostly.) I'm also looking for more sources for scores. IMSLP has been pretty good for that, but there's a lot of stuff they don't have. I know there are some libraries that lend out scores, but mostly only to orchestras, and anyhow I mostly stick with digital copies of the scores rather than paper manuscripts, so I can freely mark them up. Beyond that, just spreading the word helps. I'd like to get the attention of some orchestras if you happen to know any - the whole point of this channel is to inspire these lost works to be performed for real.

Pardon for my ignorance, what does fyrexianoff means?

oh nvm it's a youtube channel! i remember watching some piece uploaded by someone with that name lol

Yes, it's actually the 3rd-largest of my sources for piano concertos on KZfaq, after Remus Platen and Corentin Boissier's collection of channels. And unlike those two, they're mostly score videos as well. Fyrexianoff is the reason I was inspired to do scores instead of just audio-only.