You are utterly deluded if you think that Vatican II happened in a vacuum, that it was a sudden dramatic rupture with all previous theological thought, that no traces of Vatican II ecclesiology had polluted theologians before Vatican II. All theologians were pefectly orthodox and then something magically happened at Vatican II. Perhaps the devil materialized and just wrote the docuмents himself.
Pius IX had to condemn religious liberty and religious indifferentism. Pius XI had to condemn false ecuмenism. Pius X stated that the pollution had run so deep that the Church was already in his day "naturally speaking, finished".
So you cannot just cite a theologian from the 1920s, 1930s, 1940s, 1950s, etc. without caution and a grain of salt.
And what is the core Vatican II error? It's that of a false ecclesiology. What are the theological and historical antecedents to this false V2 ecclesiology? It's a gradual erosion and dismantling of EENS, and a new ecclesiology based on implicit faith belonging to the Church for salvation.
Yves Congar, who could have written V2's Lumen Gentium was a student of Garrigou-Lagrange. He was just taking Garrigou's ecclesiology to the next logical step in this process of decline.
You need to get to the root theological problem of Vatican II. By believing in implicit-faith belonging to the Church and implicit-faith salvation, yet rejecting Vatican II, you are in contradiction with yourself. You're trying to have your cake and eat it too. You either need to look back and reject the false pre-V2 ecclesiology or else accept V2.