he's likely in the neighborhood of 6'2

I think even that may be flattering him. Kane's shoot height is somewhere between 6'4" and 6'5", and if we use this picture as an accurate point of comparison (https://img.bleacherreport.net/img/images/photos/002/594/423/Kane4_crop_exact.jpg?w=1200&h=1200&q=75) then he's probably around 6'0".

Doing the same side-by-side can give you an idea of other heights. I'd put Billy Gunn as about 6'4", Undertaker either just slightly taller or shorter than Kane depending on what boots they're both wearing, and Big Show probably a shoot 6'6" or 6'7".

It still blows my mind how wrestling fans underestimate shoot heights. I remember a thread not long ago where everyone was saying "Undertaker is totally a shoot 6'7" at least!" Like, nah. Being 6'3" and sitting front row at Raw really blows your mind when you realise most of the billed "giants" like Batista are actually shorter than you.