@Nathaniel With his last edits I think he'd brought it almost around to be a good answer

I think an answer that says it's compatible in these ways and incompatible in these other ways would be acceptable

@AlexStrasser Good to hear you're liking the site! I love it here too

@curiousdannii But Catholicism and "orthodox" trinitarianism wouldn't consider it compatible in some ways and incompatible in other ways... it would have a definition of "divine simplicity" that fits with trinitarianism, and would then reject other understandings of divine simplicity.

Which is basically what Ludwig Ott does in Fundamentals of Catholic Dogma.

The way I'm understanding the question is not "which definitions of divine simplicity are compatible with trinitarianism" but rather "how is the orthodox view of divine simplicity reconciled with trinitarianism"... I think this is particularly clear from the last sentence of the question body.

And this reading seems to be in line with the type of questions regularly asked by the OP... assuming the truthfulness of Catholic dogma and working from there.

Yeah you're probably right