Any buckets from a Mazda B-series pick up of the same body style. The Mazda B series is a Ford Ranger with different lights, badges, and slightly different quarter panels. But 99% of your Ford and the Mazda are interchangeable. Even the doors, dash, headliner, etc. I have a 94' B series.
No
the seats out of a same year ranger will work but only if it had buckets in it before otherwise you may have to do some fab work
No
Interchangeable with what other vehicle? You list none. Some parts from the Explorer may be interchangeable with the Ranger.
98 ranger and what else?
Measure width of seats to see if you have enough space - you will have to drill new holes for mounting
No. Different platform.
Can a extended cab 2000 ford ranger seats fit in a regular cab 1994 ranger
a 96 Mazda pickup
No, the cab was lengthened in the 1998 model year.
will 95 explorer seats fill my 99 ford ranger ext cab
What part? Not many parts are interchangeable.