Bookmark this, refresh it often, use it for your ideal off-season threads.
https://www.profootballfocus.com/blo...gency-tracker/
If you haven't ever used this tracker before then you have been missing out. They list every free agent by position according to their grade for the season which is a nice free service. I think they also grade the free agent acquisitions as they happen, but I'm not sure on that.
Seriously though a great resource.