I've been using Soulseek for years, sharing old things that were hard to find to me. But these ones never appeared:
Alchem [Poland]: Morninglight-the Beginning
Anam Cara [Germany]: Celtic Wintersilence
Bolverk [France]: Nature...
Dreams [France]: Astral Journey
Heiden Ara [Finland]: Enne Muina
Mortland [Belarus]: Stronghold
Nord [Germany]: Ewig Winter
October [United Kingdom] : October
Slovisha [Russia]: Skazki
Snaga [Belgium] : Autumn Night
Snaga [Belgium] : Wintersolstice
Starlight Minstrel [Australia]: Chapter 1: A Serenade of Stars
Under the moon… I'm dying [Canada]: Dreams of My Majestic Landscape
Of course they are not old deleted Bandcamp releases, all of them are cassettes from the 2000s or before, distributed by Elven Witchcraft (Latvia). I'm not even sure if they are DS or not.
But I've found many others of them from the 90s and 2000s, not only thanks to Soulseek, but also to blogs like Dungeon Excavation or Ascoven.