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The dead are mentioned four times in the scene depicted at Rev 20:11-15 while the living aren't mentioned even once and that's because Christ testified at John 5:24 that the living never have to worry about being put on trial for things they've done that are hell-worthy.

In other words; none of the dead will go to heaven from the great white throne event: instead they will all every one lose their resurrected bodies by a manner of death akin to a foundry worker falling into a kettle of molten iron.

Q: How can apparently sentient, conscious people be called dead?

A: Christ said at John 5:24 that people with eternal life have crossed over from death into life; implying that prior to obtaining eternal life, they were dead on the hoof; viz: the dead in Rev 20:11-15 won't have eternal life; instead, they'll all have natural-born human life; which is a kind of life not allowed in the kingdom of God. (John 3:3-8)

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