The World Cup of Controversial Saints - nominations requested

Let's get one thing straight before we start. Once someone is canonized, it is up to Catholics (at least) to accept that this is an infallible decision. So we are not talking about people you want to de-canonize, but rather about those whose canonization has at some time been questioned. Possibly for one of the following reasons:

1. They may never have existed.

2. It was too soon, and their case was not properly examined.

3. They were at some time accused of heresy or blasphemy.

And so on. So if you are taking part in the Twitter/X poll, you may wish to think of saints you are least likely to call upon; these are not the saints who are in Heaven but sitting in the back row or behind a pillar (such places are occupied by those who are so far only Beatified).

The Plains of Heaven, by John Martin.

Here is my list so far, received from various sources. Further nominations welcome, preferably with evidence that someone didn't think they should be canonized.

Carlo Acutis
Christopher
Conus
Edith Stein
Faustina Kawalska
John Henry Newman
Josemaría Escrivá
Junípero Serra
King Louis IX of France
Maximilian Kolbe
Mother Teresa
Oscar Romero
Philomena
Pope Celestine V
Pope Gregory VII
Pope John XXIII
Pope John-Paul II
Pope Paul VI
Thomas Aquinas
Thomas More

I repeat, this is NOT an invitation to slag off saints. And my personal views don't enter here. We'll start the World Cup soon after the World Cup of Ugly Churches ends.

The Plains of Hell, by James Martin.