You don't consider at least Demon's Souls, Returnal and R&C Rift Apart to be AAA?Definitely not. They are all big games but as far as I know, they were much cheaper to make than Horizon, Gow, Tlou2, Got, AC Origins+Odyssey, Fallout 76, etc.
Maybe we really are in the age of AAAA games but there's a large gulf between the former and the later even though they all sell at the same price.