A list or A-list (??l?st?)n. Informal A list or group of the most admired or desirable people, as for a job or social gathering: a private party for Hollywood’s A list.A?-list? adj.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
B list
B list n a. a category considered to be slightly below the most socially desirable b. (as modifier): B-list celebrities. Compare A list Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014