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Pope Benedict XV proposed heliocentrism as probable in an encyclical in 1921:
If this were heretical, it would be impossible for a pope to teach it to the whole Church.
Agreed. Although heliocentrism was apparently declared heretical by the Roman congregation that investigated the Galileo controversy, I don’t believe a pope ever confirmed that judgement. In any event, I believe in a global Earth incorporated in a geocentric system.
It’s interesting to note that the Galileo controversy was never about questioning a global Earth, since most intelligent people understood that aspect of nature, it was solely about heliocentrism vs geocentrism.