Rock n Roll Royalty ...

Queen!   Quite obviously.

Any other favorites out there?

I love Elton John ,Sting,and Mika(but he is a pop singer))),

Sensational Alex Harvey Band.
The Beatles.
The Beach Boys.
ELO

Aerosmith
Led Zeppelin
Bon Jovi

KISS
LED ZEPPELIN
AC/DC

The Beatles
Led Zeppelin
Bob Dylan
The Rolling Stones
Buddy Holly
Simon & Garfunkel
Eric Clapton
David Bowie
Elton John
ELO
Roy Orbison
Nirvana
Pearl Jam
Oasis
The Police
Pink Floyd
Jeff Beck
The Foo Fighters
Ozzy Osbourne
Black Sabbath (the Dio years)
and of course... Queen.

Besides Queen, right?

Aerosmith
Van Halen (with both Roth/Hagar)
AC/DC
Rolling Stones
Beatles
Foo Fighters
Bob Marley
Dave Matthews Band
Eric Clapton
Fleetwood Mac
Incubus
Journey
Led Zeppelin
Pearl Jam
Pink Floyd
Santana
Tool
Soundgarden
ZZ Top
The Doors
The Police

Do I need to keep going? :)

George Michael

Alice Cooper
Phil Lynott/ Thin Lizzy

led zeppelin
KISS
ozzy osbourne
black sabbath
david bowie
the sex pistols
toyah
falchion

Oh God!  don't get me started :)

Oh well, if you must......

QUEEN
Billy Joel
The Beatles
Pink Floyd
The Darkness
David Bowie
Michael Jackson
Led Zeppelin
Meat Loaf
AC/DC
REM
Elton John

and even guys like Ultravox, Midge Ure, The Beautiful South, The Lightning Seeds, Travis, Oasis (and yes, even Mika lol)

*and John Lennon

RUSH

Among my all-time favourites, though not sure about the 'royalty' status:

Queen (obviously)
Rush
Mike Oldfield
Nick Cave And The Bad Seeds
Small Faces
David Bowie
The Beatles
Led Zeppelin

And that's not including the myriad of artists I really, really enjoy, which would take a few pages to list!