I Have Seen Other Low% Speedruns On Other Games But The Low% Category Here Would Technically Count As Coinless%. Low% Means Collecting The Minimum Amount Of Coins And Killing The Minimum Amount Of Enemy's Possible(It's Ok If You Guys Don't Agree With Me)

I think atm it is treated as an Enemyless% Category as the unavoidable coins above the Finish Line will get collected.

Coinless would allow you to get the red gems. Low% is an appropriate denomination.

It's basically Low% with few exceptions due to the game mechanics not allowing to finish the game without collecting a coin that is above the trophy (the finishing point of each level).

Just as @Mike_Santiago said, the name that is currently used is a good one for that kind of a category.

Oo