So far, since Power Apps has not supported the parsing of JSON objects or arrays, makers have been utilizing (somewhat complex) Regex techniques or premium action of Power Automate to handle the data in Power Apps.
Today, at latest Power Apps authoring version (v3.22091.8.234609640), the new experimental feature becomes available - ParseJSON function and untyped objects which enables us to analyze JSON object/array without use of special technique or Premium feature.