The bride of the heavenly wedding banquet is God the Mother, not a saint.

[Revelation 19:9] Then the angel said to me, "Write: 'Blessed are those who are invited to the wedding supper of the Lamb!' " And he added, "These are the true words of God."

The bride and groom are surely inviting guests. The invited guests are not the bride or the groom.
If the bride is a saint, who are the guests? Guests are supposed to be saints who are receiving blessings from God.
As a result, the bride mentioned in the Revelation is not a saint, but rather God The Mother, who invites the guests (saints) and provides blessings.

Jesus' parable about the Heavenly Wedding Feast

Even in the parable of the wedding feast that Jesus mentioned, the saints are always expressed only as 'those who will be invited', that is, the guests, not the bride.

[Matthew 22:1-14] The kingdom of heaven is like a king who prepared a wedding banquet for his son. ...
the wedding hall was filled with guests. But when the king came in to see the guests, he noticed a man there who was not wearing wedding clothes. 'Friend,' he asked, 'how did you get in here without wedding clothes?' The man was speechless. ... For many are invited, but few are chosen.

In this parable, the king's son means Jesus, who came as the Son of God.
So, who are the invited guests? Since they are chosen by King, they should be saints.

In other passages, Jesus likened the saints to guests at a wedding.

[Mark 2:18-20] Now John's disciples and the Pharisees were fasting. Some people came and asked Jesus, "How is it that John's disciples and the disciples of the Pharisees are fasting, but yours are not?"
Jesus answered, "How can the guests of the bridegroom fast while he is with them? They cannot, so long as they have him with them.
But the time will come when the bridegroom will be taken from them, and on that day they will fast.

When someone asked about the 'disciples' with Jesus not fasting, Jesus replied that the 'wedding guests' could not fast while the bridegroom was with them.
This means that the disciples of Jesus are the wedding guests. In other words, Jesus mentioned the saints not to the bride, but to the wedding guests.
Therefore, it is false to claim that the bride, the wife of the lamb at the wedding banquet in heaven, is the church (saints). In the parable of the wedding banquet in heaven, the saints are the guests, not the bride.

The bride who appears at the wedding banquet in heaven is God the Mother.