Here are my lists. Preface: I've not played any courses in Utah, Wyoming or Nevada. I've not played any Arizona or New Mexico private courses and only a couple publics in Montana. I've never considered Sand Hills or anything else in Nebraska to be a Mountain Time Zone course. I haven't played Redlands Mesa, Red Sky Ranch, Cougar Canyon or Highland Meadows but suspect one or more would at least get honorable mention on the public side. I'm leaving out Denver CC due to BIAS.
Privates:
Ballyneal
Castle Pines GC
Cherry Hills
Colorado GC
US Air Force Academy Eisenhower GC Blue Course
Hon Mention: Castle Pines CC, Pradera, Ravenna, Sanctuary
Publics:
Apache Stronghold
GC at Bear Dance
Black Mesa
Breckenridge GC
Broadmoor East
Four Mile Ranch
Riverdale Dunes
Talking Stick North
Vista Verde
We-Ko-Pa (Saguaro)
Hon Mention: Antler Creek, Dinosaur Mountain (Gold Canyon), Estrella Mountain, Fossil Trace, Grandote Peaks, Green Valley Ranch, Lakota Canyon, Murphy Creek, Paa-Ko Ridge, Pinon Hills, Raven at Verrado, Sunridge Canyon, Talking Stick South, UNM South, Ventana Canyon (Mountain), Walking Stick, We-Ko-Pa (Cholla)