Table Styles for Draw can be edited. Patches https://gerrit.libreoffice.org/c/core/+/143011/3 https://gerrit.libreoffice.org/c/core/+/140943/10 https://gerrit.libreoffice.org/c/core/+/141825/3
Of course
How to write a Help page https://documentation.libreoffice.org/en/join-the-documentation-team/update-help-contents/