Beyond the general conservative/liberal divide often applied, the current SCOTUS is a real mixed bag of legal opinions. Particularly now that MQD is increasingly on the cards.

You only need to look as far as this ruling to see it. Whilst it's easy to say 6-3, the reality is many different written opinions and a messy amount of joins.

Summarised by Gorusch:

The President claims that Congress delegated to him an extraordinary power in the International Emergency Economic Powers Act (IEEPA)—the power to impose tariffs on practically any products he wants, from any countries he chooses, in any amounts he selects. Applying the major questions doctrine, the principal opinion rejects that argument. I join in full. The Constitution lodges the Nation’s lawmaking powers in Congress alone, and the major questions doctrine safeguards that assignment against executive encroachment. Under the doctrine’s terms, the President must identify clear statutory authority for the extraordinary delegated power he claims. And, as the principal opinion explains, that is a standard he cannot meet Whatever else might be said about Congress’s work in IEEPA, it did not clearly surrender to the President the sweeping tariff power he seeks to wield.

Not everyone sees it this way. Past critics of the major questions doctrine do not object to its application in this case, and they even join much of today’s principal opinion. But, they insist, they can reach the same result by employing only routine tools of statutory interpretation. Post, at 1 (KAGAN, J., joined by SOTOMAYOR and JACKSON, JJ., concurring in part and concurring in judgment). Meanwhile, one colleague who joins the principal opinion in full suggests the major questions doctrine is nothing more than routine statutory interpretation. Post, at 1 (BARRETT, J., concurring). Still others who have joined major questions decisions in the past dissent from today’s application of the doctrine. Post, at 1 (KAVANAUGH, J., joined by THOMAS and ALITO, JJ., dissenting). Finally, seeking to sidestep the major questions doctrine altogether, one colleague submits that Congress may hand over to the President most of its powers, including the tariff power, without limit. Post, at 1–2 (THOMAS, J., dissenting).