For both paint pot sizes I have created a variation with the SKADIS hooks in two different configurations. This should let you align them side-by-side with no gaps on the board, maximizing your storage space while still being able to see the entire bottle. They Vallejo rack holds 6 bottles and the Citadel rack holds 5 pots.
For a little extra assurance, I printed these with supports from the build plate. The only supports required are for the hooks on the back and they are easily removed.
The author marked this model as their own original creation.