Last night I decided to list all Pokémon evolutionary families. I've done this before, mostly from memory. I tried on Sunday, and forgot the Krabby Line, Stantler, and a whole bunch of 4th Generation Pokemon. I just listed them from the 'dex last night though. After that, I did it for the 5th Generation, entirely by memory. It was fun.
What I learned from the exercise was this:
-72 non-Legendary Pokémon lines that began in the 1st Generation (77 total).
•182 Pokémon in it, if you count all relations from following Generations (19 from the 2nd, 12 from the 4th)
•3.311% Legendary (%2.747 Legendary with an expanded Generation)
•23.267% of all Pokémon (28.043% expanded)
-45 non-Legendary Pokémon lines that began in the 2nd Generation (51 total).
•93 Pokémon in it, if you take out all that are a part of a Generation 1 line (19) and count all relations from following Generations (2 in the 3rd, 10 in the 4th)
•6% Legendary (%6.452 Legendary with an expanded Generation)
•15.408% of all Pokémon (14.329% expanded)
-62 non-Legendary Pokémon lines that began in the 3rd Generation (72 total).
•140 Pokémon in it, if you take out all that are a part of a Generation 2 line (2) and count all relations from following Generations (7)
•7.407% Legendary (%7.143 Legendary with an expanded Generation)
•20.801% of all Pokémon (21.573% expanded)
-31 non-Legendary Pokémon lines that began in the 4th Generation (45 total).
•78 Pokémon in it, if you take out all that are a part of a Generation 1 line (12), Generation 2 line (10) and Generation 3 line (7)
•13.084% Legendary (%17.949 Legendary with an expanded Generation)
•16.487% of all Pokémon (12.018% expanded)
-69 non-Legendary Pokémon lines that began in the 5th Generation (82 total).
•8.333% Legendary
•24.037% of all Pokémon
Overall, 7.396% of all Pokémon (48) are considered Legendary, and there are 279 non-Legendary lines. (I'm counting all the Nidos as one line, as well as Volbeat/Illumise as one line).
Just some stuff. Also, try to list all the Pokémon from memory (lines, at least). It's interesting to see which ones you can't remember.