You’ve seen a Mt Lion in Ks and a Canadian lynx on the Sandias. You truly are a lucky man if that is what you actually saw as those are both extremly rare sights even in heavily populated Lion and Lynx areas. I am not questioning that you saw something, my only question was if you correctly identified what you saw. A big grayish bobcat is very easy to misidentify as a Lynx. As far as your lion sighting, you mis estimated the weight by such a huge amount that it tells me you aren’t knowledgeable about Mt Lions in general. And then there is the claim of a black Mt Lion, which do not exist and if they do it’s never been documented in biological history.
Low light, shadows, lack of familiarity with a species, to brief of a glimpse, expectation bias, all these factors can and do lead to misidentification on a regular basis. I’ve been guilty of it myself from time to time. If I had a dollar for every “grizzly” sighting in NM and CO that actually turned out to be a brown or cinnamon phase black bear I’d be able to pay cash for a fancy cup of coffee. I’ve heard it sworn to on at least a dozen occasions, it’s never true and always a case of somebody who really wants to see grizz in the wild and doesn’t know bears well enough to identify what they are seeing.