I always chop off the unnecessary "junk". In your examples I'll often find names like "The Book Lovers Cozy Mystery Series" so I'll excise "The" and "Series" and maybe change Mystery to Mysteries. Right now I'm reading the "The Lord Ramage Novels" which is what's on the covers but fantasticfiction.com lists the series as Nicholas Ramage for some reason (
https://www.fantasticfiction.com/p/d...cholas-ramage/). In any event for each book I've entered the series name as "Lord Ramage".