i'm really liking this new generation of frozen dumplings.
my fave is still the Twin Marquis Pork and Shrimp, and anything by that brand; for gyoza, it's hard to beat the Ajinomoto one.
these 'newer' brands have more vegan options, like Sobo.
https://tastecooking.com/the-next-generation-of-frozen-dumplings/