Polymer-free inkjet dispersions, based on Pigment Yellow 74, cocrystallized with ionic synergists, allow for high pigment loading and formulation flexibility. However they suffer from sensitivity to various ink cosolvents and surfactants. Structural factors, responsible for such instability originate from the substitution pattern in the aromatic rings of PY74. This pattern can be changed by using Pigment Yellow 1 and its analogs instead. The dispersions based on PY1 family show remarkable stability of particle size in presence of surfactants and micelle-forming solvents even at very high loadings. The color shade of these pigments can be changed from greenish-yellow to orange by cocrystallization. The prints, obtained with PY1-based inks have much better lightfastness than PY74 prints.