Data-Driven subscriptions: Data-Driven Subscriptions - SQL Server Reporting Services (SSRS) | Microsoft Docs
Think of your SSRS instance as a standalone reporting system. Reports deployed to SSRS can connect to any ODBC data source. This includes Oracle, MySql, SQL Server (any edition and version), PostgreSQL, Intersystems Cache, Vertica and others.
As long as you can create a connection and execute some flavor of SQL code then the reports can be built and deployed to SSRS.
By separating the SSRS instance from your production system, you also separate the Edition and version requirements. You can upgrade your SSRS instance to SQL Server 2022 - leaving your application on SQL Server 2019. Or you can upgrade your application system to 2022 - leaving SSRS on 2019.
I would also recommend you take a look at the Power BI Report Server: Power BI Report Server | Microsoft Power BI