Grindelwald and Voldemort ideological differences

Basically I've had this idea, what if Voldemort was able to gain so much popularity by contrasting Grindelwald's ideology?

Voldemort supported blood supremacy, putting the pureblood houses (loyal to him) on top with halfbloods beneath and muggleborns enslaved/exterminated and muggles wiped out.

Now let's say Grindelwald supported magical supremacy, as in all magical bloods and species equal to each other in a time where most of Europe was like magical Britain, with noble families having privileges and those beneath virtually powerless.