One would be, all those who belong to Jesus Christ. All His Church are saints. You and me too I hope.
Another would be, the saints gone on to heaven.
A third would be, he latter whose lives have been examined and have been recognized as people of heroic virtue, recommended as examples to the whole Christian community, i.e. canonized.
We are not all going to be canonized, but there are many, many more Christians in heaven than the canonized. Canonization does not change their status in heaven, where he last will be first, and the first last.
Scripture uses saint in just one way - applied to every single person who has entrusted themselves to Christ for salvation, based on His sacrifice alone to pay for our sins.
Only God knows His own. No church can state who is a saint with 100% accuracy. Nor are miracles ever required by God. This process perverts God’s clear Word and confuses Christians on earth.