Politicization and ideological polarization are two different things. Take
Dobbs for example. That was an ideologically polarized decision, not a political one.
Roe is the product of a judicial philosophy that conservatives think is fundamentally wrong, even if they don't oppose abortion. For half a century, conservatives were unified in saying they would overturn
Roe, even though--as we have seen subsequently--there was a lot of intra-party conflict about what abortion law should actually be.
Dobbs hurt the party that appointed the justices that voted for it. Trump would probably be cruising to the election in 2024 if Biden didn't have that card to play.
Most of the cases you identify split along ideological rather than political lines.
> We had a decision on the SEC vacating some of its enforcement powers, 6-3 with only the 3 liberal justices dissenting.
What the case actually held was that the executive branch imposing fines without a court order violated the Seventh Amendment. It's a separation of powers case, and reflects the same ideological debate about separation of powers that we have had for 100 years. Do you believe that the Constitutional three-branch structure should be respected, or is it obsolete in light of modern society?
> We had a 5-4 decision vacating an EPA regulation, with the 3 liberal justices and one of the more moderate conservative justices dissenting.
This is an executive agency decisionmaking case. Again, same debate we've been having for 100 years.
> We had a 6-3 decision on the EMTALA-abortion decision, with the 3 most conservative justices dissenting.
This was probably the most idiosyncratic and ideological case, but it's not political at all. It's Thomas and Alito willing to die on an ideological hill, not caring that virtually nobody in their party wants to follow them t here.
> Yesterday, we also had a decision on bribery which was 6-3, with the 3 liberal justices dissenting.
It was actually a decision on whether someone could be prosecuted under a bribery statute for a payment he received after taking the official act. Where other parts of federal criminal law make an express distinction between bribery (which corrupt official acts) and gratuities (which create the appearance of corruption but can't directly influence official acts).
This one is probably the most overtly political. Liberals voting to expand the scope of criminal law and conservatives voting to narrow it is weird. But it's worth pointing out that the Court's conservative wing has a strong libertarian streak these days, especially Gorsuch.