I do not like Liberation Sans at all for Comments in Calc (actually anywhere in LO). Is there a way to get LO to add this as a Style? If not, where do I need to go into
Preferences / Advanced / Open Expert Configuration
and what do I need to change to fix this? I tried the Replacement Table under Preferences / Fonts but just did nothing.
If not, I wish someone would create an Extension to fix this.
This is for unavailable fonts on your system. So it would only be considered, if you remove Liberation Sans from your system…
It will be on 24.02 version, you can download to test:
https://dev-builds.libreoffice.org/daily/master/current.html
When you add a comment, a new style for comments it’s created
https://bugs.documentfoundation.org/show_bug.cgi?id=103064
It’s nice - just it’s about Writer, but the question is for Calc.
You are right, my mistake. 
Just change the default model.
Proceed as follows: Create your document, with your personalization, and click File - Save as Template, select the template category and save the template. Under File - New - Template, select the template and the Set Default Template icon.
Okay, LO, add Comment Style to Calc like you did to Writer please. This is so long overdue.
This isn’t the place to ask for enhancements, see How to Report Bugs in LibreOffice - The Document Foundation Wiki
