I'll tell you that I love both Laphroaig 10 and Quarter Cask, but didn't care for the otherwise highly rated Cask Strength.
I didn't see mention of Ardbeg Corryvreckan and it's definitely worth a try since you like Islay's, as I evidently do too.
One bottling that has been recently discontinued in February that I really like, and you can probably still find, is the Hakushu 10, which I like better than its replacement, the Hakushu 12.
Also you mentioned Yoichi NAS, but not my favorite, Yoichi 10, or Miyagikyou 10 cask strength, which you can get from the distillery about 40 minutes out of Sendai.
Tell me what part of Japan you're in so I can make some recommendations.