Oh. I actually found a solution. I knew I had seen this before recently somewhere and here it is. SketchPlus has exactly the deep-select feature I was looking for. So far I kinda didn’t want to install it because it’s a beautiful toolset containing basically everything I need, that I already have solved with other extensions. And I am pretty loyal to my tried and true extensions. 
But this deep select - well I like it a lot!
Mapped it to Shift + D, so I don’t need to hunt for the icon. I will try this for the next to week, see if it improves my workflow.
Thanks for the help everybody!!!