Rather than a Table Style, consider setting up a Table formatted the way you want, and saving that table as an AutoText entry. When you want to use such a table, insert the AutoText. Yes, you can have two consecutive header rows.
You can even attach a keyboard shortcut to your AutoText if you want.
- https://www.addbalance.com/usersguide/autotextautocorrect.htm#AutoComplete
- https://www.brandwares.com/bestpractices/2018/07/xml-hacking-add-a-table-of-contents-to-the-toc-gallery/
- https://www.addbalance.com/usersguide/tables.htm#Header
- https://addbalance.com/articles/Assigning%20Keyboard%20Shortcuts%20in%20Microsoft%20Word%202007-2024%20(365).htm