I won't cover any of these events, though I might change my mind about the Russian Championship. That event has several 2700s playing, most notably Ian Nepomniachtchi. On the other hand, it's missing 50-time champion Peter Svidler (a slight exaggeration), Vladimir Kramnik, Alexander Grischuk, and Sergey Karjakin, so it's not as strong and interesting as it could be. Anyway, here are links for the three events:
Russian Championship (This will be more useful for those who can't read Russian.)
Spanish Championship (I didn't find a direct website for it either on TWIC or Chess24, so I've linked to Chess24's page.)