This has been a little harder than I thought - there are a lot of options out there, but most are too small, or aren't really for full bike commuters, more for people packing just laptops and files and maybe a shirt or something.
That Osprey pack is still the tops because it has a lot of storage sorting options - especually since I will be bringing dress shoes back and forth sometimes, as well as having to pack shower sandals, and soaps/creams, etc every day. Most other packs are just giant single caverns, or they're just too small.

The closest competitor is the Chrome Industries Barrage - but again, it's got a slot for a laptop but the rest is just one big hole. I'd rather separate my things into existing different built in pouches, then buy a whole mess of separate carrying cases for stuff.