The Blue Origin lander is pretty big and would need to be launched in pieces. The Dynetics lander, on the other hand, is much smaller and could definitely fit in Falcon Heavy with the extended fairing (that SpaceX is already developing for Air Force payloads).

I'm a big fan of the Dynetics lander. It's small for its capability and just a single stage (plus drop tanks) so should have low development and build costs. Video of it: https://www.youtube.com/watch?v=GFBeVQ3STZ0