Qantas have had the -200 (almost counts as a -100 cos it was P&W and delivered in 1971), -200B (with Rollers under the wings, mmmnice), -300, -400, and -SP. And they are the only customer to date for the -400LR. The fleet still includes the -200B, -300, -400 and -SP. In any case the -SP is bizarrely based on the -100, not the -200, even though the -200 was well and truly up and running by the time the -SP was born.
Saudia and SAA have (or did at one point) the -100, -200, -SP, -300 and -400. Indeed, Saudia still have some -100s, so they have the full house right now, probably the only airline to do so (for some reason they uniquely bought some new -100s from Boeing in the late 70s, one of these aircraft tragically crashed in India a few years ago after a midair collision).
JAL have all "in stock" except the -SP which they've never operated (although it was designed very much with them in mind, so they could do JFK-TYO nonstop).
Air France have all except the -SP. Most airlines who ordered the -300 had -200s before it and -400s to follow, ie Cathay, Singapore, Thai, Air-India, Varig. Of this lot, only Air-India had the -100. None ever had the -SP.
fly Saha Air 707s daily from Tehran's downtown Mehrabad to Mashhad, Kish Island and Ahwaz