I am honestly not sure - since there are so many polishes in 3M's line up, my experience with them is limited. I stick mainly with M105/205, and Menzerna or Wolfgang polishes, but that's just me personally. I do love their Ultrafine polish and know that it does not contain fillers that hide defects. On the other hand, one would assume that Imperial Hand Glaze WOULD hide defects. Were there any specific products you wanted to inquire about, or do you want to know exactly which ones in their entire lineup contain fillers?
Like I said, you might be best off contacting 3M directly. Otherwise, if there's a couple specific products you're inquiring about, I'm sure I can help you out. But I can't go testing their entire line up.