Check out ON1 Photo RAW. Unlike Lightroom and Capture One, you don't need to import your photos into a library -- you just browse to whichever folders they're stored in. Edits are non-destructive, and ON1 has the most-comprehensive collection of filters and presets I've seen. They issue an update every month with new features. I purchased ON1, Affinity Photo, and Luminar when they were on sale, and each has its strong points. I'm a serious amateur photographer, not a pro, and I'm still trying to figure out the best work flow for me.
Unlike many people, I don't dislike Apple Photos as a DAM, especially since it started supporting external editors. My iPhone photos go right into Photos. With my Sony a6000, I shoot JPG and RAW pairs, import the JPGs into Photos for immediate gratification, and use ON1 to process RAW photos that were shot under challenging lighting conditions. For what I do, the JPGs usually are good enough. However, I might start shooting RAW only and import them into Photos, using my other apps as external editors when necessary.