Off the top of my head, I think you're correct. Before DT, I think (without checking) that Cam Wade was the last wrestler before DT from Ohio, and his recruitment pre-dates CS at PSU.
Hopefully,
@El_Jefe can pipe in on how many prospects from OH, since DT, PSU has recruited. I believe they were involved with a 1 or 2 of the Jordan kids. I believe PSU was involved a bit with Logan Stieber, but I seem to recall Stieber being an early verbal (in terms of where he was in HS) to tOSU, so perhaps they weren't that involved with him. (Again, I really don't recall the details; just some fragments.)
Sorry for the late response -- I was out of the country on vacation and just got back last night -- Happy Thanksgiving!
Anyway: Cam Wade and Dan Vallimont were both from OH, and overlapping with Taylor. I don't think we've had anyone else from Ohio enroll at PSU until Blaze arrives.
Bo Jordan visited PSU and famously declared that Cael's practices weren't serious enough. I don't recall PSU recruiting MIcah; maybe we did, but it was always a long shot with Bo having gone tan.
We made Carson Khachla's list, but he was widely expected to go Tan.
Cael went hard after Lucas Byrd when he flipped from Maryland, but he chose Illinois. Pretty sure we were his runner-up.
HWT Carter Neves gave a "soft verbal" a couple years ago, that everybody knew at the time meant nothing -- Cael was gonna continue recruiting heavies, and Neves was free to pursue other schools if Cael found someone else. When the twins committed, Neves committed to Stanford -- and when Koll left for Chapel Hill, Neves flipped to Tan Tom. He's now a shirting true freshman.
The only other guy who maybe we dipped a toe in the water for was David Carr. Certainly he's been on very good terms with PSU since enrolling at Iowa State -- but we did not make his finalist list.
Without going thru the rosters, I don't think we've had any Ohio depth guys since Cael arrived.