Kadence was one of the first block collections released even before the official release of Gutenberg. The pro version adds support for dynamic data and custom fields, as well as a number of advanced block types and features. Kadence Blocks are often paired with the Classic Kadence theme, and the pro version of that theme includes Kadence Elements, which is the ability to create theme templates using Kadence Blocks.
Kadence supports ACF, JetEngine, Meta Box, Pods, and Toolset custom fields. Kadence Blocks Pro is one of the few block collections to support ACF and Meta Box repeater fields and post relationships.