The bit about Glasnow's IP is factually incorrect. In fact it would rank 3rd.
When you are slow and you hit everything in the air, to the pull-side, with a 15% line drive rate, 50% med contact, and a career-low 34% hard contact, then you are gonna have a hard time getting non-HR hits. He's almost like a RH Schwarber. Interestingly, when Schwarber posts good BABIP, you also find that he hits a solid amount of line drives.