Historical clue formulations

• Star clusters? — 2023-08-13
• Elite groups — 2022-12-01
• V.I.P. rosters — 2020-04-19
• Exclusive groups — 2017-03-19
• Most-wanted groups for parties — 2017-01-16
• Elite groups — 2015-11-15
• Hosts prefer them — 2013-05-09
• Preferred groups — 2012-09-30
• Groups of stars — 2009-05-03
• Desirable guests — 2001-09-23
• Party hosts prefer them — 1995-11-03