Okay, so I scoured the OSU and John Glenn airports in Columbus for interesting flights over the last few days (I also checked Longview and Tyler airports as suggested), and this is what I've got.
Plane 1: Went Laredo TX to Columbus last night. Owned and operated by Kalitta Charters, a flight charter company out of Michigan that is reputable -- e.g., does a lot of work for the Department of Defense -- and operates out of Bergstrom and in other TX areas. Plane returned to Kalitta HQ after the trip.
Plane 2: Went Houston to Columbus on Monday, then Columbus to Sarasota FL yesterday. Operated by NetJets, so not reaching much into subsequent stops.
Plane 3: After being in Columbus late last week, went to Longview and Brownsville TX last Thursday. On Sunday, it went from Brownsville back to Columbus.
Plane 4: One of the planes we were tracking last week that went from Horseshoe Bay to KOSU this past Sunday. Bounced around since then (it's another NetJets-operated plane), but it's upcoming itinerary for today and tomorrow is showing Chicago --> KOSU --> Horseshoe Bay.
Plane 5: Went from Sarasota to KOSU earlier in the week. Has made a couple hops in South Carolina since then, with next leg to Clemson SC this afternoon. Clearly Urban coming back from the FL vacation and checking out a couple SC golf courses before going to steal Brent Venables away from Clemson.