Here are the current MOB list stats. MOB lists are maintained by each region and are updated monthly. The lists are provided on each region's SharePoint site. It's about as transparent as it gets. When I came back in to the Navy in a Reserve capacity in 2009, the lists were not shared and there was zero transparency. It was all a big secret.
Each list is ordered by rank. Within each rank, people are "racked and stacked." Named volunteers are at the top followed by people who have never MOB'd. These people are then sorted by their Pay Entry Base Date (PEBD). If you are prior enlisted, your PEBD will be earlier than someone who was never in the military and hence, you will be ranked higher on the list. This is then followed by people who are out of dwell. In this regard, if someone has previously MOB'd and is out of dwell, but they are the only one of their rank (e.g., are the only O4 IP in the region), they will be on the list as #1 slot for their rank.
Mid-Atlantic - 3 IP's O3 (1), O2 (1), O1 (1)
Midwest - 8 IP's - O3 (5), O2 (3), no O1 IP's available
Northwest - I cannot locate list
Southeast - 7 IP's - O3 (6), O2 (1), no O1 IP's available
Southwest - 18 IP's O3 (10), O2 (8), no O1 IP's available
Washington, D.C. - 5 IP's - O3 (4), O2 (1), no O1 IP's available
Each list is ordered by rank. Within each rank, people are "racked and stacked." Named volunteers are at the top followed by people who have never MOB'd. These people are then sorted by their Pay Entry Base Date (PEBD). If you are prior enlisted, your PEBD will be earlier than someone who was never in the military and hence, you will be ranked higher on the list. This is then followed by people who are out of dwell. In this regard, if someone has previously MOB'd and is out of dwell, but they are the only one of their rank (e.g., are the only O4 IP in the region), they will be on the list as #1 slot for their rank.
Mid-Atlantic - 3 IP's O3 (1), O2 (1), O1 (1)
Midwest - 8 IP's - O3 (5), O2 (3), no O1 IP's available
Northwest - I cannot locate list
Southeast - 7 IP's - O3 (6), O2 (1), no O1 IP's available
Southwest - 18 IP's O3 (10), O2 (8), no O1 IP's available
Washington, D.C. - 5 IP's - O3 (4), O2 (1), no O1 IP's available