The last to most arrangement is often used in

If we were writing a persuasive piece, the "least to most" arrangement can be used. This is used as a structural design of your essay that ties in well with the thesis. Even though I don't typically like it, it is commonly taught and often expressed as the best structure to use.

The "least to most" arrangement manages to catch the reader's attention with the least "important" evidence before going into depth and detail about your ideas and argument. Analogically speaking, it can be referred to as a hill. The bottom segment accounts for the least important details of your argument, and each step you take, you dive deeper in your analysis/idea, until you reach the top, where you should have already persuaded the marker/reader.