Tower.
10) Master Gremlins. ...I'd rather stay silent, but... no, I'll speak. By acquiring ranged attack, they completely lose their already weak melee attack. And hundreds of these green monstrosities are just for show. In melee combat against them, there's nothing to be afraid of...
1 point.
11) Archmages. Good combat units: damage, health, stats, no penalty at the same time. And they also reduce the cost of casting spells. This is doubly effective for cheap spells. They are very good. 5 points.

Allow me to disagree with you! I'm even outraged!
I understand that the conclusions are based on games against the computer?

Gremlins in online games, for the Tower faction with a 1-1-1 upgrade, are indispensable creatures! In my opinion, the rating is 5.
And Archmages are rarely used because of the need to build a Library for the upgrade. (usually, a Tower is built first, and then a Library)
In my opinion, the rating is -3.

Regarding Storms. Their damage is 2-8, which naturally makes them the best ranged units. But unfortunately, there is a penalty in melee combat (it says 2-7 in the code and there is no penalty, this is an error)