score:3
Yes, of course. If we are talking of international travel, then we have at least https://en.wikipedia.org/wiki/Refugee_travel_document https://en.wikipedia.org/wiki/1954_Convention_travel_document https://en.wikipedia.org/wiki/United_Nations_laissez-passer https://en.wikipedia.org/wiki/European_Union_laissez-passer
But the question is extremely broad if we also allow for domestic travel. There are more than a few countries where domestic flights exist and collecting the acceptable documents for each is a very big task.