Mercury (owners of Limelight), Philips/Fontana, and International Polydor were all under one odd roof in the 1960s and early '70s, so technically he did six albums under that umbrella in short succession (although Touching was originally on Danish Debut, so the Fontana is a reissue). That said, the only one that received US distribution was Mr. Joy, though Arista/Freedom did reissue two of the Philips/Fontana/Polydor sessions.
Ramblin' was originally done for GTA, an arm of RCA Italy, and that label folded so BYG put it out instead (and Red Record somehow reissued it later in the 70s).
Bley did quite a few records for ECM, starting with two albums of archival recordings, and also a number for Soul Note and his own IAI imprint, which he co-ran with his wife, video artist Carol Goss. One of the ECMs and one of the IAIs were supposed to be on ESP, so that would have made four on ESP.
So I'm not really of the mind that his releases were that far flung in terms of where they landed, and he did have the creative freedom to do pretty much whatever he wanted in most instances (something that might not have happened on Columbia or Prestige).