Between those, Luminara is the best. But all of them are only usable in early game and will fade very fast as you progress. So don't over invest gear into them.
If you will farm from scratch, here is the good ones. ! -mace(only farmed for an old ship meta that's not relevant anymore) +barriss+obi wan (generally used in rebel teams though). Rest is junk.
Kanan is required to unlock Thrawn. You will want him at 7* / g8 at some point.
JC's ship is OK mid game. JC himself is fun for a gimmick jedi team in Hoth TB (GK lead, 3 healers and 1 attacker) but not great in any way.
Mace Windu's ship is the weaker capital ship but it has it's uses until you unlock Negotiator (end game). Mace himself is not great in any way.
Luminara was great 4 years ago. Now, she's rarely used for anything (though also usable for that gimmick team in Hoth TB).
Others:
Ezra is required to unlock Thrawn.
Old Ben is required to unlock CLS.
Jolee and Bastilla are both required to unlock JKR.
Ahsoka and Shaak Ti are required to unlock GAS.
Hermit Yoda is required to unlock JKL.
You will want all of those at 7* at some point - probably in the order as listed.
Regarding a team:
Bastilla is a great leader mid game until you unlock JKR.
Jolee is great for his mass revive.
GK (farmed in the tank raid) is a great, versatile tank.
JKA and GMY are great attackers.
Bastilla is a very good choice, because besides being good herself, she's also a superb leader(even when you get Revan). Ani after rework is awesome and very high damage as well.
Replies
Kanan is required to unlock Thrawn. You will want him at 7* / g8 at some point.
JC's ship is OK mid game. JC himself is fun for a gimmick jedi team in Hoth TB (GK lead, 3 healers and 1 attacker) but not great in any way.
Mace Windu's ship is the weaker capital ship but it has it's uses until you unlock Negotiator (end game). Mace himself is not great in any way.
Luminara was great 4 years ago. Now, she's rarely used for anything (though also usable for that gimmick team in Hoth TB).
Others:
Ezra is required to unlock Thrawn.
Old Ben is required to unlock CLS.
Jolee and Bastilla are both required to unlock JKR.
Ahsoka and Shaak Ti are required to unlock GAS.
Hermit Yoda is required to unlock JKL.
You will want all of those at 7* at some point - probably in the order as listed.
Regarding a team:
Bastilla is a great leader mid game until you unlock JKR.
Jolee is great for his mass revive.
GK (farmed in the tank raid) is a great, versatile tank.
JKA and GMY are great attackers.