Scotists
Note from Essay On Criticism by Pope

The disciples of Duns Scotus, one of the most famous and influential of the scholastics of the fourteenth century, who was opposed to Thomas Aquinas (1224-1274), another famous scholastic, regarding the doctrines of grace and the freedom of the will, but especially the immaculate conception of the Virgin. The followers of the latter were called Thomists, between whom and the Scotists bitter controversies were carried on.

Scotus is said to have demolished two hundred objections to the doctrine of the immaculate conception, and established it by a cloud of proofs