The professional version of the Kadence Theme comes with an Elements feature that lets you create theme templates. Combined with the pro version of Kadence Blocks, which supports ACF dynamic data, and you have a complete theme builder solution.
Kadence Blocks can be used with any theme, but the Kadence theme has deep support for them and Gutenberg styles are synced with Customizer settings. The Kadence Theme and Kadence Blocks are frequently updated and enhanced with new features. A community of loyal users has grown quickly around this solution.