If you go on the OHSBVA website, there is a tab for maps of current teams. If you click there is a map of "potential" teams as well. I'd assume there was some communication between those schools and the OHSBVA about having interest in having a team.
Based on that, in the South there was interest from Georgetown, Goshen, Turpin, Anderson, Lockland, Woodward, Mt Healthy and Northwest. If Turpin and Northwest added the ECC conference would have 7 teams (currently Milford, Loveland, Walnut Hills, West Clermont, and new program Lebanon).