Percona 'branding'

Very difficult transition for me to make from Debian/Ubuntu, where mysql==mysql and not ‘percona’. So all the ‘stuff’ installed by percona comes up as ‘mysql’ but a lot of the supporting libs seem to arrive as ‘mariadb’ rather than ‘mysql’ even though the version # of the percona I downloaded applies to mysql, not mariadb. Very confusing, is there a good kickstart readme I’m missing somewhere? Anybody that can explain why percona, was it to avoid proprietary stuff since Oracle acquired mysql?
TIA,
Alex

Maybe start here?

Right, there’s always a question about things that start OpenSourced, get wildly popular, and then start to veer toward the $$$: this, albeit dated, article is quite interesting.