According to Overthecap (who is very good at this), Williams is a 5

Two 5s for Williams and Corbett, a 6 for SJD, and a 7 for Obo. There are five comp picks after Obo. That matters because only the top 32 comp picks count. So as other names like Honey Badger sign deals and then either that cancels out one of their picks or knocks the lowest 7th round comp pick off the list. So the Obo pick has some buffer but not a ton.