I believe the term midwit is for people above average intelligence but not quite MENSA or genius levels. Something around 115 would be considered midwit according to what I understand. I suppose it is dependent upon which test is used as well since some tests are easier and give higher scores.
Discussion
I scored 137 in middle school. I think iq tests are more about the size of the glass not about the content.
I think a lot of people use the term midwit to mean that. they are essentially talking about the average redditor who is slightly above average but not smart enough to realize how not smart they are. But "mid" is actually 100 (of course) so I guess you could just argue (probably more accurately) that a midwit is literally just "mid" of the bell curve 🤷