A recent addition to the church’s social teaching is “Delexi Te” ( I have loved you) from Pope Leo XIV. This is the Pope’s first Apostolic Exhortation and is focussed on love for the poor.
The full text of the document is available on the Vatican website. https://www.vatican.va/content/leo-xiv/en/apost_exhortations/documents/20251004-dilexi-te.html .
CAFOD have produced a very good short guide: https://cafod.org.uk/pray/dilexi-te-explained