I and my wife, like you have visited many of the places you mentioned plus many not mentioned. Yosemite is one we still wanted to visit and planned to do so when we went to visit one of our Sons in CA, but we will now never be able to do that as we waited too long. Due to our age and health problems now, we can no longer make that trip. However we are thankful for having been able to see all of the places we did get to see.Yosemite is on the list of places I want to visit.
Been to Niagara Falls, checked the Grand Canyon off last year (but would like to go back and hike into the canyon). Saw the rockies in Colorado as a kid. Swam in Lake Superior. Can't remember the name of the glacier we saw in Alaska... And a bunch of less touristy stuff all over. There's a lot of natural beauty to be seen in this great country.