I think you are getting SSD and what a spinning disk drive is mixed up.
A spinning disk drive
A spinning disk is the mechanism within a hard disk drive to which memory is written. With rotating plates attached to an arm that writes the data, the spinning disk mechanism physically resembles a record player (although it is sealed within an enclosure). It’s the technology used behind writing data on your hard drive(SSD or HDD).
What I believe you are wondering is if you are using SSD or HDD.
These days, SCSI HDDs (Small Computer System Interface hard disk drives) are quickly being replaced by SDDs (solid state drives). Unlike the spinning disk of an HDD, a solid state drive involves no moving parts. Instead, data is stored on a series of connected flash memory chips
Your droplet is using SSD. Having said that, you’ve mentioned swap and how it’s slower on SSD. Yes, compared to RAM, swap no matter using SSD or HDD is slower. Despite this, compared to HDD, SSD is much better.