Hello @joostjojo ,
I just wanted to post how i accomplished your mockup you did in vision but using the perspective XY chart.
Below is a screen shot of a test screen i am working on currently. To get bars layered behind others you just need to copy your x axis so that you have 2 x axis configured (rename the second one so they aren’t the same) then in your series for the data you want behind you use the second x axis and change the z index of your series so that the one you want in the back is 0 and increasing as you move towards the front of the screen. to make the bars wider set the top bars width(under column/appearance) to something you like then on the other series set the width to something slightly larger.
