ArcCatalog remains the quickest way to view and manage GIS data by many miles. Simple operations like renaming, copying, and moving take ages to process in Pro. See below and pardon the alarmingly disorganized geodatabase. 35 seconds to rename a feature class in Pro (during which the application is locked up); in ArcCatalog, the operation was so instant that it finished before I could reset the stopwatch. A process taking well over 30x longer in an application that boasts performance improvements over the "old" ArcCatalog is really inadequate.
Have I tried resetting my Pro application settings and doing a full reinstall -- yes. Yes, I have.
Related: Offer a standalone ArcCatalog replacement for ArcG... - Esri Community