Just suggestions for subject desc and codes to consider.

AMF	Amish fiction.
ROMAM	Romance - Amish.
ARIN	Artificial Intelligence, Nonfiction.
ARTF	Arts (Fiction).			or Fiction - Arts.
BEFF	Best Friends (Fiction).		or Fiction - Best Friends.
BILI	Bilingual Book
CHRF	Christian fiction.		[note: this is a 655 so you likely already have it]
ROMCH	Romance - Christian.
CLIMF	Climate change (Fiction).	or Fiction - Climate change.
CLIMN	Climate change (Nonfiction).
DIY	Do it yourself.
FARMF	Farm and Farming (Fiction). 	or Fiction - Agriculture.	or Fiction - Farms.
F-GAL	Titles in Galician.
HANDB	Handbook / Manual (General).
JEWF	Jewish fiction.			[check to see if you already have a Jewish Interest subject]
KNITF	Knitting (Fiction).		or Fiction - Knitting.
746	Crafts - Textile arts, knitting, crochet. 	[note: use 746 if your subjects are mapped to the Dewey call numbers]
LIBF	Libraries and Librarians (Fiction)
020	Library & information sciences.			[note: use 020 if your subjects are mapped to the Dewey call numbers]
NLSF	NLS Picks (Fiction).
NLSN	NLS Picks (Nonfiction).
PARC	Paranormal fiction - Cozy.
SUMMF	Summer Reading Book (Fiction).
SUMMN	Summer Reading Book (Nonfiction).
TRAVF	Travel fiction.			or Fiction - Travel.
WRITF	Writers/writing (fiction).	or Fiction - Writers/writing.
400W	Language - Writers and writing.