Amharic script for Sorting &creating a word lists?

Is there anyone with experience of using Amharic script in Devonthink?

Not me. But I remember seeing a question related to that here in the forum in the last (approx.) six months… Right, here: Searching for non-ASCII text
Maybe they can help you (although I can’t be sure that they were asking for Amharic – might well have been Oromo or Tigray script for all I know)

Thank you!