Meh, Nioh was shit. Boring bosses, boring setting and repetitive enemies. Doesnt belong with these other 2. Sekiro, on the other hand...
But more on topic. Honestly I got bored with Ninja Gaiden Black, havent played in years, but i'd def. pick Bloodborne over the other 2. Nioh as I said I consider a mediocre game and Bloodborne simply has more fun gameplay, better setting, amazing lore and just overall great atmosphere. Everything checks out well.