Trip: good writeup. Much of your complaints, its hard for me to identify with (or it just doesn't really bother me, aka the notch factor or the clock positioning) as I have exclusively for several phone generations now used both (a) Swiftkey and (b) Nova Launcher, so I'm used to Swiftkey certainly and always customize the layout/etc to my preference (and have prediction history as well that's tied to my Gmail account) and get a consistent experience there.
And, consistency of experience especially plays in with the Nova Launcher usage....I always read/hear reviews about how bad LG's home screen/etc are, but i never bother experiencing them anyway because I prefer to stick with what I know - which also has a *ton* of customization ability within it. I used it dating back to Samsung GS phones (the 5 is the last one I used I think before I flipped to the LG G5 in early 2016), so regardless of which brand of Android you're using, if you save/import your layout from your prior phone after you've restored all the apps you've created shortcuts for, other than maybe re-configuring widgets if you use those, you're good to go almost immediately. If you've never tried it, I highly recommend it.