The "Sport" package had the most EXTERIOR trim. They had window chrome, the belt line chrome, chrome headlight rings & a chrome grill ring. They also had the "Bronco Sport" emblom on the side. Rangers didn't have the exterior chrome trim like the Sports did. I have seen some Rangers with bits and pieces of chrome, but never the full package.
The "Explorer" interior trim had the best of the best. Houndstooth cloth seats & pleated, padded (if you can call it that) door panels. I have also seen the rear quarters covered with the houndstooth but am not sure what package that is. The other interior packages only had metal door panels & vinyl seats. That is the biggest difference in the 2 interiors.
The "wagon" is just the definition on the title. I have my daily driver, a 72, that is a Sport/Explorer and it is listed on the title as a body type "wagon". I also have a 70 that is a plain jane EB that has the body type listed as "UP" for pick-up.
Hope this helps a little. I know there is something that I have probably left out, so if anyone else can think of, chime in.