[WPMU DEV Dashboard] Question on Themes and a plugin

I’ve actually had your service for some time now but just getting going with it.
Is there any theme that you guys recommend that is 1. Compatible with the block editor gutenburg 2. Easy to use and looks good 3. SEO friendly ?

Also … do you have an SEO plugin? I’ve used Yoast in the past which i like but if you have one I’m willing to try it out