My list is short, but includes several classic or near-classic airliners:
Lockheed Electra IIs: Western Airlines between Phoenix and San Diego, and Pacific Southwestern Airlines between San Diego and San Francisco.
Douglas DC-3s: Frontier Airlines between Tucson and Silver City, New Mexico, and Ozark Airlines between Columbia, Missouri and Kansas City.
C-121 Lockheed Constellation: Military Air Transport Service from Travis Air Force Base near Francisco to Tachikawa AFB, near Tokyo, via Hickham AFB, Hawaii and Wake Island. Between Travis and Hickham, I got to sit in the co-pilot's seat for about an hour while he went for coffee. Most of the flight, all 26 hours of it, was flown at only 5,000 feet. My seat was near the trailing edge of a wing -- I don't recall which one. All night long, between Hickam and Wake Island, long, incandescent exhaust flames trailed into the darkness.
Boeing 707: Continental Airlines from Tokyo to San Francisco.
Lockheed C-130E Hercules: Marine Corps medical evacuation flight from Da Nang, South Vietnam to Clark AFB, Philippines. I had been wounded in a firefight with VC and PAVN troops.
Lockheed C-141A Starlifter: U.S.A.F medical evacuation flight from Clark AFB, Philippines to Travis AFB, with a stop in Hawii for fuel and handing out of Purple Hearts to wounded Marines.
Twin Beech: Return flight, in the cockpit, from Prince George, British Columbia to the northern BC Communities of Ingenika and Fort Ware.
DeHavilland Twin Otter: Flights around Prince George and area with my Grade 7 students, most of whom had never been on an airplane.
DeHavilland Turbo Otter float plane: Return flight, from Vancouver, BC's Coal Harbour floatplane base to Victoria on Vancouver Island.