I totally understand the frustration of waiting. We submitted an offer on a VGF contract on May 11 and heard back on June 2 so it was pretty quick!! But our prior offer on an SS contract took 46 days and then Disney took it in ROFR. Ugh. It worked out better for us since I really wanted the VGF contract but the waiting is always tough. Best wishes to you!
Looking at the dates- when the contracts come in they must put them in an aging pile for a weekly meeting in 4 weeks- they review them ( probably takes an hour) then hand them off to a clerk who files and sends out the notification- That would explain the distribution over a 5 day spread.
If not RR/VGF/VPB would get put In a no pile and get resolved sooner.
The place I work does a similar thing with expense reports ( 30 day hold) so we always get them in 31-38 days