The intro reverse noise noises and the scraper noise are both samples from Cuckooland Unhinged. You can also find the samples in software such as Zero-G Altered States. I can't share the samples as the licence doesn't permit it.
The bell lead, I believe is a preset from the Roland XP-80/JV-2080. The actual bell sample at 2'44 onwards is a sample from Spectrasonics Distorted Reality. Again, can't share as it's from a library...sorry!
Almost every track in Metamorphoses uses a sample/loop from either Cuckooland or Distorted Reality (1&2) and the loop collection, Metamorphosis, as well as Liquid Grooves (C'est La Vie) also from Spectrasonics. The loops from Distorted Reality are included in Stylus RMX as bonus packs.
The Roland Vintage Synth module (or JV-SR04) expansion was also used throughout Metamorphoses, so I would say it likely that the more 'vintage' sounds of choirs etc. probably came from there - or the Raven, but the choirs in the Raven don't sound as clean as those heard on bells.