What will the new Pope be like? He’s chosen to be called Leo: that’s no accident | Catherine Pepinster (Guardian, 2025-05-08)
"Cardinal Robert Prevost has chosen the name Leo XIV – and if you’re a papal Leo, you tend to be a reformer at the progressive end of Catholicism. That Prevost has decided to become Leo XIV will make Catholics think immediately of the last Leo – Leo XIII – and his 1891 encyclical or teaching document, Rerum Novarum, which outlined workers’ rights to a fair wage, safe working conditions and the rights of workers to belong to trade unions. If Pope Francis was the People’s Pope, then Leo XIV is all set to be the Workers’ Pope."
cf.
https://en.wikipedia.org/wiki/Rerum_novarum
https://en.wikipedia.org/wiki/Pope_Leo_XIII