One example, where Alito reaches back to Witch Trials to justify his anti-abortion stance:
https://www.propublica.org/article/abortion-roe-wade-alito-s... ...
I understand "tradition" can play a role in jurisprudence, but this is clearly a bit much.
Really to find super-obvious examples look at almost any judgement by Thomas, or Alito.
The others (Roberts,Kavanaugh, Coney-Barrett & Gorsuch have all been able to partly go against perceived partisanship now and then.
This doesn't mean that there isn't left-wing jurisprudence operated by the "progressive" side of the aisle, but generally (I feel) it's more rare. Maybe if the court were 6-3 in the other direction it would be similar, where a couple extremist outliers would consistently vote with a strong Partisan bias.
The weakening/overturning of the of federal oversight of the south's voting processes, which was originally mandated by the Voting Rights Act, is another one I would call pretty partisan. But that's just my view. YMMV.