After going thru a long list of themes, the following themes have some or all capabilities I’d like to have in a theme:
http://www.hossainmohdfaysal.com/hmfaysal-omega-theme/
https://github.com/holman/left might not be as pretty as https://zachholman.com/
http://chrisanthropic.github.io/slim-pickins-jekyll-theme/
https://rohanchandra.github.io/type-theme/
http://aronbordin.com/neo-hpstr-jekyll-theme/
http://bloginn-jekyll.justgoodthemes.com/
http://biomadeira.github.io/jasper/
http://phlow.github.io/feeling-responsive/
Not sure if this one has a downloadable theme: https://mademistakes.com/articles/jekyll-style-guide/
Highly modified theme: http://willkoehler.net/2014/08/26/save-50-hours-setting-up-your-jekyll-blog.html
