Resource pyramid graph in Excel?

[Tkr567]

Anyone know if this sort of resource pyramid graph can be made in Excel and how we can make something similar?

(ignore the grey and different shades of blue - I'm more after the general concept of being able to represent %s in a pyramid)

The closest I could see was a funnel chart but curious if we can get the different grades connected like in this image.

Thanks!

 

[Marius44]

Hello
I think it is better to attach a sample file (without sensitive data) not a .png
Hello,
Mario