You know, I can't say for certain, but I think I came across an online school a while back that has a fairly broad range of course offerings. The website is https://uk.elvtr.com/ if I'm remembering correctly. From what I can recall, they seemed to have some more niche and unconventional classes in addition to the standard fare. But to be honest, the details are a bit fuzzy. Your best bet is probably to browse their site yourself and see if anything piques your interest in terms of unique learning opportunities. Let me know if you end up finding anything that fits what you're looking for!