Combine catlist name= with starting_with ?

No matter how much I fiddle with the code in List Category Posts, I can’t figure out a way to subdivide a list consisting of category name by something like the starting_with parameter.

Goal: I have a long list of poetry posts. Using LCP I can easily list them alphabetically with code like [catlist name=poetry orderby=title order=asc numberposts=200]. But I would like to break the list up alphabetically; that is, All the A’s grouped together, the B’s, and so forth. In the end, I would have 26 separate LCP lists.

I tried variations on [catlist name=powerful-poetry starting_with="a" orderby=title order=asc numberposts=200] but have failed so far. If someone else has accomplished this, I’d appreciate hearing how you did it. Thanks in advance!

https://www.ads-software.com/plugins/list-category-posts/