(Minecraft) How to target zombie villagers through name and not type?

I've been struggling with this for a while. I'm trying to use /tp @e[name=Zombie Villager] (random coordinates) in order to remove any naturally spawned zombie villagers from my world, but not any named ones purposefully spawned in, which is why I can't use @e[type=zombie_villager] as it would remove every zombie villager including the wanted ones. The problem is, @e[name=Zombie Villager] doesn't seem to be working. I've tried variants of the name, tried checking its datatags but it doesn't show its default name, only custom name if there's one. Can anyone help?