>>12629079Don't you see that all your example come from pokemon who don't have a repetition in their name beetween evolution?
Because we have
-Pidgey/Pidgeotto/Pidgeot
-Pichu/Pikachu/Raichu
-Nidoran/Nidorino/Nidoking
-Slakoth/Vigoroth/Slaking (in that one the repetitive syllable change but it still come from a previous evo)
-Aron/Lairon/Aggron
-Magby/Magmar/Magmortar
-Timburr/Gurdurr/Conkelldurr
Etc...
When a syllable/sound is repeated beetween two evolutions, the third one got it too.
And yes I know it's muh pattern, but it's the thing that is the most likely to happen.