The only name I could think of would be for the Dems to run Eric Fingerhut again, and after his single term in Congress, he did manage to return to the Ohio Senate for awhile (left office in 2007).
You do not have to live in the district so I wonder if Dennis Kucinich wouldn’t run.
Other Dem choices would include 2 of Lake County Commissioners, although they are both running for other offices at the moment.
When Fingerhut represented the district (then numbered the OH-19), it had a finger that winnowed far west into heavily Dem areas south of Cleveland. I don’t think that Fingerhut would be a very good candidate for the Dems in the new OH-14; they’d be better off with some blue-collar county official from Lake or Ashtabula Counties.
You know what Democrat used to represent part of the district in Congress? Jim Traficant! (The old 17th stretched into northeast and north-central Trumbull County until the 2000 Census, and those areas are in the new OH-14.) He’s out of prison now, and certainly would make the race entertaining. Somehow, however, I don’t see OH Dems managing to convince the Democrat nominee to step down and then replacing him on the ballot with Jim Traficant. : )