Graham bemethavinci
Here is a folder of nine 'templates' although really they are sort of 'mock ups'
http://foundation6.xtgem.com/templates/
Some you could adapt to create real pages
things like the blog templates would need custom twig files
here are the files in a form you should be able to upload
remove the .css after upload
http://foundation6.xtgem.com/template_files
Foundation has just as much stuff that will not work on older devices as bootstrap has
A lot of foundation is aimed at people creating sites on their own servers

I also like the look of this w3 schools css template
https://www.w3schools.com/w3css/default.asp
simpler but still does the job
this is possibly more compatible with older mobiles