First person that comes to mind, Chris Harrington - former Wrestlenomics - brains behind AEW Data Analysis
Second person - Chris Charlton - author of Eggshells, and former POST contributor - part of the best 3 man booth in Wrestling today.
Chris Samsa - statistician for NJPW (@TheChrisSamsa on Twitter)
Craig Leask - statistician (@PWMusings on Twitter)
both these guys are doing incredible things with Stats on Twitter
As for Topic Based shows - I loved the initial RoundTables you had in the early days of POST Wrestling (that is so weird to say, but true!); if you incorporate that for the Cafe, and perhaps can ask some listener-based questions from the chat or submitted ahead of time on the Forum that would be fun interaction.