I can heartily recommend Nitro¹, which is Aperture's spiritual descendant. I very happily replaced Lightroom with Nitro a couple years ago. Gentlemen Coders is Nik Bhatt, who led the Aperture, iPhoto, RAW Camera and Core Image engineering teams, as well as the imaging team for the Mac version of Photos.
¹ https://www.gentlemencoders.com/nitro-for-macos/