do you wanna hear my headcanon for why professor oak's pokeball looks so different in the 4th movie even though the anime established that normal pokeballs have existed for hundreds of years
of course you do
so basically back in the day, pallet town was even more of a one-ponyta town than it is now and didn't even have a store that sells pokeballs
what they DID have was an electronics store
so babby sam got himself some electronics that had been broken in shipping, salvaged what he could, and made his own pokeball so he could leave
and that's why the pokeball was so primitive
because it was made in a CAVE, with a BOX OF SCRAPS
...well minus the cave part ;P
the end
(granted that doesn't explain why he was so surprised when ash used his pokeball but sshhhhh)
and thus I think of that Pokeball variant as "Homemade Pokeball"