“seeking God in all things” is an early heresy. Can someone with more knowledge of Church history name it? I’m thinking pantheism but I think that there is another name for it.
Pantheism is not seeking God in all things.
Yeah, it's wiki, but this gives a decent summary of what pantheism is.
In a similar way, "Seeking God in all things" is just the kind of short, pithy phrase (like "God is love") which lends itself to both orthodox and heterodox interpretations.
If you think God is simply"in" all things but is not absolutely transcendent, that is panentheism. The word you were perhaps looking for. It is a heresy because it does not distinguish between God (who is the eternal and infinite Creator) and His time-bound, space-bound creations.
But there is an orthodox sense of the word, which means that God is omni-present. He can be found in, and far surpassing, everything He has willed into existence.
Meanwhile, shame on "Catholic" institutions --- worldly institutions still living off the bequests of devout alumni and the fumes of Catholicism ---which showcase error rather than refute it.