This chart below (the pdf file) was made by a Telegram user "Matt" to show the historical transmission of the true church from the Great Commission up until the present day. Various offshoots of Christianity are presented as well, such as Catholicism. Take a look!
Many people think that Catholicism was the only "Christianity" in existence for hundreds of years, but sincere followers of Jesus Christ have existed since the Apostolic Age. Here's a book on the topic of Baptist church perpetuity for those interested:
"We believe that the Baptists are the original Christians. We did not commence our existence at the reformation, we were reformers before Luther and Calvin were born; we never came from the Church of Rome, for we were never in it, but we have an unbroken line up to the apostles themselves. We have always existed from the days of Christ, and our principles, sometimes veiled and forgotten, like a river which may travel under ground for a little season, have always had honest and holy adherents."
—Charles H. Spurgeon
So what denomination am I? I'm just a Bible-believing follower of Christ, and you should be too!