Skytrax is also composite, right? I imagine if we had a solely J, solely F, or solely both (premium) rating, we'd see a different story. BA for example I think would go higher there. Their F is dubbed "the best business class" for a reason (no meme, lol). Like seriously, there's so many airlines with crappy J still and 2-2/3-2s. I probably wouldn't touch AI premium with a pole. Most of the hate I've seen around certain airlines seem to emanate from the back of the plane.
Ok, so I was curious and...
These seem right, except LH should be knocked down from #7 on F and DL is not #5 on J lololol. Personally I care about these lists more.