Zendesk Templating v4 compatible Zendesk Themes?

Reading through https://support.zendesk.com/hc/en-us/community/posts/8043398017306-Which-Guide-theme-am-I-in-and-how-to-move-to-the-latest-theme, I'm not seeing a good way to identify the templating version of the themes for sale on the Zendesk marketplace. I've received one recommendation from my post on Reddit, and have been asking theme vendors. Please comment if there are any other v4 compatible themes you know of.