I just spent about an hour organizing my checklist and binders to get my Jae Crowder PC up to date. I added the 2021-22 Flawless and 2022-23 Optic releases to my spreadsheets. I am at over 1100 unique Crowder cards and almost 85% of his entire checklist. I've gotten over the 85% mark before, but it drops when a new product releases. The latest release, Optic base, has 46 parallels. Some real ugly ones too.... Copper Glitter /99?!? GTFOH
Anyways, here's the front page of my checklist where I track my progress.

And if you're curious, here is a link to a video I threw together for the Wax Museum Podcast that goes through how I develop my own person checklists. If you have a player in any of the sets that Crowder is in and want a checklist for that rainbow just let me know. I have them all setup in a spreadsheet and could forward it on to you.