Seren, here's that list I use:
These are the standard people I invite to events. If you know more, please tell me then I'll add them.
(Ofcourse I don't invite myself )
Beyram, Finna - The Mithril Guard
Yenlui, Malon - The Shadow Sentinels
Tormeron - Embrace
Serendipity, Alwynn - Rhyme and Punishment
Heba - Ebon Flame
Sharitha, Illarail - Handmaidens of Elune
Elenwë, Fleck - Glitterclink Company
Othessa, Malidor - Golden Owl Academy
And Ufgrim - his guild may or may not be a RP guild but he loves to be invited to RP events.
Same goes for Jiaoxi.