Adding my two favorite adventure hikes (hike into caves, up ladders, to waterfalls, rock scramble, etc..not just a trail through the woods)...

Old Rag Mountain (Shenadoah, VA) https://home.nps.gov/places/old-rag.htm

and

The Mohonk Labrynth Trail (Catskills, NY.. so much fun hiking in caves, up ladders, etc) https://www.mohonk.com/a-day-at-mohonk/hiking/

This site is about long distance trails--things that take weeks or months to complete, not stuff like your Old Rag for which every listed hike is in day-hike range. I don't see trail distances on your second link but once again it appears to be day-hiking.

Considering the US ones on that list--there are people that have managed to do all three in one year, albeit with some flip-flopping. There are more of them than there are moonwalkers.....still living.

Just sharing my love for hiking and some unusual and exciting/adventure hikes. Some in this thread might find useful.

I'm sorry it does not meet your standards.

It's not about standards, it's about off topic. The trails you are referring to are far enough from me I know nothing of them, they very well might be good trails. They aren't long distance trails, though.

Among those, the Ice Age trail is only about half-complete. The whole thing can be walked but you'll be doing about 500 miles on roads.

PCT is on the site (now anyway, in case it was recently edited).