My bikes are all very different from each other, with only two that are somewhat interchangeable. The thing that was driving me nuts was at one point I think I had bikes with every shifting mechanism made in the last 30 years. I had:

-MTB with thumb shifters
- MTB with grip shift
-MTB with trigger shifters
- Three speed with lever shifter
- Road bike with downtube shifters
- Road bike with STI brifters
- Touring bike with bar end shifters

I would always mis-shift on rides at critical times- the times when you should be going on instinct I would inevitably hit a lever in the wrong direction. Except DT shifters of course, because they're so intuitively obvious