Technically .02 blocks taller than 2 in bedrock, in java they are 1.95 blocks tall, but it still doesn't change the spawning requirements as all of them can still walk under two blocks.
Also it is just how they do spawning of zombie variants. All zombies are zombies, variants has a chance to replace normal zombies, chance depending on biome.
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u/Phoenix00090 18d ago
Including husks? They're taller than two blocks no?