no, arceus was the first “being” and created mew, which is the first pokemon and all pokemon descend from mew. Technically in the pokedex Bulbasaur is the first pokemon and the first ever concept art for Pokemon have weird creatures resembling some gen 1 Pokemon
And the first implemented in the games was Rhydon, with the index number 1, pokemon statues (in gyms, Cinnabar Mansion and so on) modelled after it, just like the animation for the move Substitute.
no, arceus was the first “being” and created mew, which is the first pokemon and all pokemon descend from mew. Technically in the pokedex Bulbasaur is the first pokemon and the first ever concept art for Pokemon have weird creatures resembling some gen 1 Pokemon

you missed the factoid about rhydon
And the first implemented in the games was Rhydon, with the index number 1, pokemon statues (in gyms, Cinnabar Mansion and so on) modelled after it, just like the animation for the move Substitute.