One of the most important Google ranking criteria is site speed as you know. Here is my list:
1 - Sparkling
Sparkling is compatible with a lot of free blog-related plugins. Some of those include Gravity Forms, Contact Form 7, Yoast SEO, W3 Total Cache
2 - Zerif
Most downloaded in the corporate theme category
3 - Colormag
Much better than most paid themes
4 - Mh Magazine
Totally responsive, this free theme, which is downloaded more than 2000 times a day, is among the best options with speed and SEO compatibility.
5 - Enigma
Adapted to every business model
1 - Sparkling
Sparkling is compatible with a lot of free blog-related plugins. Some of those include Gravity Forms, Contact Form 7, Yoast SEO, W3 Total Cache
2 - Zerif
Most downloaded in the corporate theme category
3 - Colormag
Much better than most paid themes
4 - Mh Magazine
Totally responsive, this free theme, which is downloaded more than 2000 times a day, is among the best options with speed and SEO compatibility.
5 - Enigma
Adapted to every business model