On the low end, we've got 2 x 1st level and between 2 and 4 in the 3rd to 4th level, depending on how you count omnitricks' and Piston Honda's characters in terms of activity. Omni piped up with one post in the DWI after an extended inactive period and PH has not posted since the completion of Silent Tide, but may be just watching.
Neither of my two games are very close to completion: The Road to Tritower has just started its first encounter, and ROUS3 is maybe midway done, but rolls into the final installment of the series upon its completion.