Absolute consensus. Even without the TJS, Glasnow's ceiling is higher than Taillon's ever was...and the stats he put up at his age in high A ball are pretty damn mind-blowing. He's a potential ace; Taillon a potential #2. Glasnow has consistently been the 3rd rated pitching prospect behind Gioito (Glasnow's upside, a year behind in development, but with a 1st round pedigree) and Syndergaard (long-standing top prospect...he's somewhat like Cole in the stuff is much more impressive than the stats).
I've seen Taillon list as low as 4th amongst Pirates prospects...I disagree with that, but the grouping is pretty close with him, Meadows, and Bell.
I started work on my own Top 20 list due to your requests...no clue when I'll finish it. It may be tonight, it may be in a couple weeks.