Prefer white medical nappies, i find ABDL printed diapers make me cringe, I agree printed nappies are thicker and absorb more. I have bought some from Nappies 'R' Us once. They felt nice and smooth, absorbed well but the baby imprints of furry animals make me cringe the same way a grown man making baby talk does.
I asked the supplier Nappies 'R' Us if they would make the same nappy in plain white as they comission the designs under their branding.... no go, no plans.