Late 2017, and into early 2018, I searched long and hard for something that could replace Lightroom, but sadly I came to the conclusion that there is no other product that offers the same level of features, and ease of use as LR. While I abhor the idea of a subscription, there's a reason why LR is the market leader.
I used to use Aperture and I went right over to LR when Apple announced its death, I wished they didn't kill it off, because I think Aperture is that one program that offered similar features and abilities.
While there are developers jumping on the DAM bandwagon, few have the same level of control, as LR does. Capture One is probably the closest that gives a lot of editing ability, great RAW conversion, and decent DAM capabilities. Yet, I found I was shoehorning my work into a workflow I didn't care for. That is LR allows me to work the way I want too, but C1, did not.
Like it or not, Adobe has done an incredible job with Lightroom, and it really doesn't have any equals in my opinion.