I started working on a time line awhile ago that following these Presidents but I ended up abandoning it.
1974 - 1977 President Gerald Ford/Vice President Nelson Rockefeller
1977 - 1981 President Jimmy Carter/Vice President Walter Mondale
1981 - 1981 President Ronald Reagan*/Vice President Gerald Ford
1981 - 1985 President Gerald Ford/Vice President Howard Baker
1985 - 1993 President Howard Baker/Vice President George Bush
1993 - 2001 President Al Gore/Vice President Dick Gephardt
2001 - 2005 President Dick Gephardt/Vice President Bill Bradley
2005 - ? ? ? President John McCain/Vice President Tom Ridge
*Assassinated
Fun thing about the Dream Ticket / Reagan assassinated scenario that people often forget is that Ford, having never been elected President in his own right, would still be eligible to run for re-election in 1984.
In my timeline he declined to run.