The idiot I am just realized that the Beserker Bewilderbeast and the HTTYD2 Bewilderbeast were separate dragons

All this time I thought the Berserker Bewilderbeast just left the island after the series finale and took her nest (including Valka) with her to the northeast where we find them in HTTYD2.

So… that means there are at least 3 left, right? The Berserker one, Drago’s (canonically alive as of HTTYD3), and the egg?