As I developed my (guitar) chord vocabulary, the min7 chords were followed by the min6 chords. One was different. In the major key, the iii is what I have called a min♭6. However I have gotten some feedback that it shouldn't be named that. I realize that many chords have multiple names, and that the context is critical, but this is the name that I felt was most sensible in the context of the iii.
So, would you name a chord spelled G - B♭ - D - E♭ anything other than a min♭6?