In addition to being thought of as a wind or keyboard instrument, there's another component to all pipe organs that makes each of them unique in a way (almost) no other instrument is - the room they are installed in. With very rare exceptions, pipe organs aren't mobile, so the acoustics of the room matter almost as much as the pipes do.
Here's a more in depth look at all the sounds of that same organ: https://www.youtube.com/watch?v=e1S42E1BW9w - this channel has documented a number of organs over the years.
Here's Rob Scallon exploring the largest pipe organ in the midwest: https://www.youtube.com/watch?v=JeB3JnKp8To
Here's a more in depth look at all the sounds of that same organ: https://www.youtube.com/watch?v=e1S42E1BW9w - this channel has documented a number of organs over the years.