Everything in the middle is purely HDD even with SSDs offered widely for the same amount of money if you're willing to lose storage (e.g. 256 GB SSD == 1 TB HDDs).
Come on Asus, Dell, and similar. Start offering SSDs across your entire range. I should get the choice of either a smaller/faster SSD or larger/slower HDD. It isn't a premium feature and hasn't been for a long time.