> Catholic Social Teaching: 19th C origins. An alternate base to Marxism for social justice.

See specifically perhaps the encyclical Rerum novarum (Rights and Duties of Capital and Labor) from 1891:

* https://en.wikipedia.org/wiki/Rerum_novarum

* https://en.wikipedia.org/wiki/Catholic_social_teaching

Various others over the decades.

'Communitarianism'.