I now have 4 distinct sizes for the gloves:
Average Adult: these fit an average adult hand
Men's small: slightly tighter than the average
Ladies small: these are best for a small ladies hand and may still be a little loose but much smaller than the average.
Men's XL: these are for a larger than average man's hand and they are pretty big, whereas there should be another size between average and XL but there isn't so get this only if you have really big hands
My hands are larger than average for a woman, middle finger 3.5" long and is at least 2.5" around, pointer finger to thumb 4 3/4", around the palm below the fingers is 8" and my hand is 7.5" long from tip of middle finger to bottom of palm/beginning of wrist.
Here's how the gloves fit me:
The small have too short of fingers and tight. I cannot even put them on.
The average fits well with no tightness and there's still room for stretch. See the first photo
The men's small is very snug on my hand.
The XL is huge to my hand. There is a photo at the end and that is my husband's hand in it.
My fingers are a scant longer than his but his hands are girthier and they are still kinda loose looking however he said he'd be fine with a fit like that.