In the UK, before the EU banned them, we called all Pomacea snails apple snails but differentiated the species with a 'forename'.
The most common apple snail in shops was brig apple snails, P. diffusa, the name brig from when they were thought to be, P. bridgesii. These were smallish, growing to the size of a golf ball, and rarely ate live plants.
We also had cana apple snails, P. canaliculata. These grew to the size of a tennis ball and did eat plants.
There was sometimes other Pomacea snails but those two were the most common.
Fast forward to last year when the UK un-banned them. What species of snail are now being sold here? They could be anything. I've seen them called mystery snails, the US name for brig apple snails, though that doesn't mean they are brigs, we all know shops/wholesalers for mis-naming things.
What did the place you bought yours from call them?