Cernan Lovell Young
Of course, none
landed twice. Only Cernan and Young orbited on two missions; Lovell only orbited on one since Apollo 13 was a lunar fly-by.
I've always wondered why Stafford didn't get a moon landing mission?
Good question. Probably a personal choice. I think he's the highest-ranked military US astronaut, so perhaps military promotions meant more to him than additional flights. He certainly wasn't too old for a lunar flight; he's the same age as Pete Conrad and John Young, and while he's older than Gene Cernan and Dave Scott he's younger than Jim Lovell. Alan Shepard, 7 years older than Stafford and Young, was criticized for being too old for his lunar flight but Apollo 14 was an unusually strenuous lunar mission (long EVA hikes without a rover).
Stafford seems to have gone into NASA management as of 1971, presumably removing him from active flight consideration for the near term. But of all the US astronauts of that era he seems to have had the strongest personal interest in the Soviet manned space program, so that made him the natural to come out of retirement and command ASTP in 1975. I can't imagine the physical training for ASTP was anything like that for an Apollo lunar mission or even Skylab. I'm sure ASTP was mostly about learning the Russian language and an entirely different set of pilots, hardware, procedures, cultures and institutional politics. I bet he spent far more time on international travel than any other US astronaut of his time.
Still, considering his very quick and cool-headed reaction to the N
2O
4 emergency during the ASTP entry, he was as capable an Apollo commander as anyone. He quite likely saved his crew's lives by getting them onto emergency O
2 under extremely difficult conditions. One (Brand) had already passed out, and without help he could well have died.