I had it pretty bad in a couple batches. LHBS tried one of the not-so-prominent ones, and said oxidation. The only thing I could think of was that my tubing from the auto-siphon wasn't extremely tight, and let little air bubbles into the stream of beer when racking to bottling bucket or keg. I tried a smaller diameter tubing, one that I really had to FORCE onto the racking cane, and it did not let any bubbles into the stream while racking. I haven't had it since (knock on wood).
Main thing that bugged me, was it was my darker, and less-hoppy beers that had it. All my IPA's and pale ales didn't have it. I noticed the styles you listed weren't heavily hopped, so it jarred my memory. Just a thought, but if you see little bubbles where the racking cane and tubing meet, and they're going downstream with the beer, it could be oxidation.