I was also trying to ignore my own preferences or at least acknowledge when they differ from the general consensus. I personally might prefer "Free Your Ass & Your Mind Will Follow" these days (I go back and forth between that one and "Maggot Brain"). "Take It To The Stage" is probably my favorite if the later albums.
Family is tricky because they're still pretty obscure so you don't hear about them often but you might be right. Only familiar with the first 2 albums myself (sampled tracks from the later albums and couldn't really get into them).
Yeah, Amon Duul is another borderline case. I do think that "Yeti"'s definitely the most popular by a fair margin (when compared with say, people who prefer "Tago Mago" vs. people who prefer "Future Days" or "Ege Bamyashi") but it probably doesn't really qualify as "universally acknowledged" as their best.