They are different diameters for the first pair you mentioned. 185/65/14 and 195/60/14 are about the same. On different axles, there should be no mechanical problem in any case as long as they are the same on the same axle. . But, they have different tread patterns, perhaps load ratings and it may affect the abs during braking… If you have traction control and stability control, , you could have problems getting max effectivness out of that as well. It will handle differently and maybe worse in an emergency manuever. Personally, I wouldn’t do it.
It’s always best to have 4 identical tires on any car and that means 4 OEM sizes! If you had an accident and control was an issue and the insurance company found out you were mixing and matching tires, you have just given them an excuse…