Yes, Jerry - I think there was a general adjustment of those by moving the descriptions up a gauge, perhaps in the '80s/early '90s, so it became...

14/above - Heavy
13 - Medium
12 - Light
11 - Extra Light
10 - Ultra Light
9 - Completely unsuitable for acoustic guitar, suitable only for electrics or cutting cheese.

My interest moved from playing electric to acoustic in the late '80s, and I've always seen 12s referred to as Light, and 13s as Medium.

But there is such a wide range of gauges, and mixes of gauges, available now, I seldom refer to strings as Light, Medium, yadda yadda, I refer to them by the gauge of the 1st string in the set.

The usual disclaimers apply......IMHO, YMMV etc.