Is it true that a Florida Resident cannot be sole executor of an Ohio Will?
The Attorney named in the Will as co-executor with me  refuses to
return my phone calls. Is there any public record of WHO the
co-executor is?? The owner of the Will is gravely ill. If I need a
Cleveland Attorney, what is the best way to find one who specializes
in Probate Court?

No you can not see who is mentioned in the will or the will itself
while the individual whose will it is is alive.  The reason is, a will
has no effect until death and is not a final document until death.

You have to wait til death to see it or act on it. So sit tight.

No, I don't want to "sit tight" since I am going to have half of the
responsibilities of settlement.