In many years of playing Pokemon games, I managed to get the following shinies in these series:
Ruby
- Numel
- Beldum (oh yes, after only 3 times resetting because I wanted a good nature, it turned up to be shiny xD Still have that Metagross!! :3)
Emerald
- Wingull
FireRed *for some VERY ODD reason, I always encountered 80% shinies in the Safari Zone...
- Doduo
- Rhyhorn
- Nidorino
- Paras
- Exeggcute
- Weedle (caught in the very beginning, just played only for 10 mins in my new Save game before encountering him rofl)
- Koffing
- Pidgeotto
LeafGreen
- Magikarp (it was lv: 67 or so in the wild ROFL I'm not even joking xD)
- Bulbasaur (my FIRST soft-reset-starter-shiny!)