The question might be too general to answer…
This is why,
I have personally never know of one person who I would consider a saint who is Protestant. Looking through history I see none, but I do see some very nice people.
John Wesley seemed a very kind and hard working man, maybe like Ghandi. Maybe I don’t know enough history.
Kindness, a willingness to save souls, stand up for injustice, preaching the Love of God, all are not what make people saints as Hindus, Buddhists, Protestants and Catholics all have done this. People need to do a bit more and that is change themselves for God’s truth.
Billy Graham, who probably has brought many to Jesus seems like a very nice man, probably a better man than most Catholics sitting in the pews. Many so called Catholics aren’t Christians either they just call themselves Catholic but adhere to their own personal made belief system.
So as a Roman Catholic I would say some Protestants are good people, now Christians that takes a little more examination.
A Protestant can be a Christian if he doesn’t deny God’s truth and is always willing to affirm it, even if it is Catholic. If someone has too much pride to believe in a truth* of the faith that is presented to them just because it is Catholic then they really aren’t Christian but just a person who want to believe what they want to believe. (essentially a self worshipper)
A Christian is someone who affirms God’s truth and is willing to change for God.
*I said truth because if it was just a belief then it really doesn’t matter.
I have met 2 Protestants who have done this when I talked to them and their openness of heart and honesty lead me to admit that they are good Christians who are seeking truth.
(I have spoken to about 90 Protestants in long conversations and about 15 Pastors)
This is just my personal experience, your results might vary.
Most people have a very immature understanding of their faith and many times do not want to investigate it or talk deeply about it.
In Christ,
Scylla
You need to broaden your understanding of what is a Saint of God.
All faithful Christians are saints whether they are canonized or not. A famous Anglican childrens’ hymn often sung on All Saints Day says it well:
I sing a song of the saints of God,
patient and brace and true,
who toiled and fought and lived and died
for the Lord they loved and knew.
And one was a doctor, and one was a queen,
and one was a shepherdess on the green;
they were all of them saints of God, and I mean,
God helping, to be one too.
They loved their Lord so dear, so dear,
and his love made them strong;
and they followed the right for Jesus’ sake
the whole of their good lives long.
And one was a soldier, and one was a priest,
and one was slain by a fierce wild beast;
and there’s not any reason, no, not the least,
why I shouldn’t be one too.
They lived not only in ages past;
there are hundreds of thousands still.
The world is bright with the joyous saints
who love to do Jesus’ will.
You can meet them in school, on the street, in the store,
in church, by the sea, in the house next door;
they are saints of God, whether rich or poor,
and I mean to be one too.
kershaw.org.uk/song/about.html