Took my Leica m262 out with me the other day....
In my post-editing, I often aim for simplicity, but I usually turn to Dehancer for the "mastering" phase.
Dehancer is a photo editing software created by analog photographers, so its toolset follows an analog approach. The grain it produces is outstanding, far surpassing what Lightroom offers (though that's not a high bar).
Use the code "pictureroom" for a 10% discount on Dehancer if you'd like to give it a try: Dehancer Shop.