I know you will find these charts indispensable.
I have been in the Sign Industry for 32 years, 20 of which in the film industry creating graphics, printing and painting sets, store fronts, vehicles and planes etc. from Hand-Lettering, Silkscreening, Vinyl Cutting, Inkjet printing...
It seems I have spent my career matching Pantone Colors, One-Shot paint, Benjamin Moore Latex colors and for the last 12 years... matching the Digital Inkjet Printer Colors to those Color matching systems.
I found that matching a "known" or printed CMYK color from the printer to a sample (whether it be a paint chip or a pantone book swatch) is the only real way to be assured of a good match!
I created these charts from scratch as there were no charts like these anywhere.
(mainly for the hundreds of hours I put in creating the charts). Appreciated... Mike Shoring