So, here’s all the arcs I’m planning to cover:

CHRISTOPHSIS (Season 1)
MALEVOLENCE? (Season 1)
GEONOSIS (Season 2)
MANDALORE (Season 2)
MANDALORE (Season 3)
LUX BONTERI (Season 3/4)
NIGHTSISTERS (Season 3)
RETURN OF MAUL (Season 4)
MAUL ON MANDALORE (Season 5)
MORTIS (Season 3)
AHSOKA FRAMED (Season 5)
AHSOKA’S JOURNEY/MARTEZ SISTERS (Season 7)
THE SIEGE OF MANDALORE (Season 7)

And a few extra ones I might include:
DOMINO SQUAD (Season 1/3)
UMBARA (Season 4)
ORDER 66 ORIGINS (Season 6)

The only thing about including the first Domino Squad arc is that you then must include THE CITADEL arc featuring Fives and Echo, which I don’t really care much for.

Here are the major characters of this film series:
ANAKIN SKYWALKER
OBI-WAN KENOBI
AHSOKA TANO
BARRISS OFFEE
ASAJJ VENTRESS
SAVAGE OPRESS
MAUL OPRESS
MANDALORE (the planet and all its characters: SATINE KRYZE, BO-KATAN KRYZE, ALMEC, PRE VISZLA, etc.)