The song itself is in the public domain, but certain arrangements, performances, and recordings will have their own protection.
Ray Overholt wrote the song Hallelujah Square!
Hallelujah Square
The copyright for "Hallelujah" originally written by Leonard Cohen belongs to his estate and music publishers, Sony/ATV and Sony Music. Cohen's estate manages the rights to his songs following his passing in 2016.
I would assume Richard O'Brien still holds the copyright.
The Canton Spirituals
Unless other arrangements were made, the creator is the initial copyright holder.
Warner-Tamerlane.
Muppets, Inc.
Unless other arrangements were made, the creator is the initial copyright holder.
The Richmond Organization.
The Rank Organization.
Catchme.com is registered to Slingshot Labs.