There isn't. Period. Full stop.
There is no Baptist church in heaven, no Presbyterian church in heaven, no SDA church in heaven. There is one, universal church in heaven. If you say it in Greek, it's "katolikos", "catholic".
The relationship of that church to the organization with offices on Vatican hill in Rome is something to debate, but not the proposition that there is no salvation outside the universal church, the ekklesia katolika, founded by Christ.
If you are to be saved (and I hope you are), you will be incorporated into the Catholic church somehow. It may happen in some mysterious way that only God understands and that I couldn't explain to you if I tried, but it will happen.
And if I'm wrong and I still need to be, I hope God gives me that grace also.
But that's what we ARE debating...We have always agreed that we are all part of the 'universal' church...
That religion that sits on those 7 hills in Rome is NOT the head of that universal church...And THAT church in Rome that claims to follow Peter is the church whose leaders claim we must be members of THAT church to attain salvation...
And that idea is rejected by God...