A clarifying image

Here's a rework and correction of the earlier image. David's border colour is red, Asaph in book 2-3 only green, Korah blue - book 2 and 3 only, I had slipped from one Moses to two and two Solomon to one - easy slip to make.

David is the only attribution to appear in all books. Maskilim have a double border, miktamim a quad border

Can you write a maskil or a miktam?