Let me just pick one. Case closed.
Council of Florence:
There is no other way to come to the aid [of infants] than the sacrament of Baptism by which they are snatched from the power of the devil and adopted as children of God
There are dozens of other such passages from the beginnings of the Church, and the Church has always condemned as grave sin the delay of the Sacrament of Baptisms for infants for this very reason. Even that passage from the Roman Catechism which is construed as arguing for Baptism of Desire states clearly that it cannot apply to infants, and thus Baptism cannot be delayed without grave sin.
Even this Modernist tripe from the Vatican admits that this was the universal Catholic teaching until it was "re-imagined" at Vatican II, but then Vatican II re-imagined lots of things.
https://tinyurl.com/mvs53cpyReally, the only debate that went on was whether these infants ended up in Hell (with some form lf "mild" punishment) or, rather, had a perfect natural happiness without any punishment or affliction whatsoever. St. Augustine taught the former, but was almost completely abandone after St. Thomas taught the latter. There was a brief revival under St. Robert Bellarmine, who tried to come up with a reconciliation between the two, and then the Jansenists, whose rejection of Limbo as "Pelagianism" was condemned by the Church. But the position of St. Augustine has been almost universally abandoned after Bellarmine and Bossuet.