The Type dimension of TYK2 Targeting Drugs segmentation distinguishes molecules by their mechanism of action and selectivity profile, directly shaping clinical positioning and revenue potential. Selective TYK2 allosteric inhibitors—exemplified by deucravacitinib—constitute the dominant sub-segment because they bind the regulatory pseudokinase domain (JH2), achieving high specificity while sparing JAK1/2/3 and thus minimizing dose-limiting toxicities such as anemia or infections. This safety dividend supports first-line use in psoriasis and expansion into inflammatory bowel disease, driving the largest share of 2023 prescription volume. Conversely, dual TYK2/JAK1 inhibitors occupy a smaller, exploratory niche; by simultaneously blocking both kinases they can suppress broader cytokine axes (IL-12, IL-23, IFN-α/β), but overlapping hematologic adverse events restrict development to topical or short-course systemic regimens, capping their commercial upside. Finally, TYK2 PROTAC degraders remain pre-clinical: they offer catalytic, sustained protein knock-down that could extend dosing intervals, yet proof-of-concept data in human whole blood are still pending, so their contribution to current market size is negligible while their long-term pipeline value is recognized in risk-adjusted forecasting models.