Rebel team around CLS

Each Raid is unique. In fact, each Phase of each Raid is Unique, so there won’t be a set squad to recommend for you in the way that you’ve asked.

For the HPit, I’d recommend a Wedge lead, with Biggs, Commander Luke, Raid Han, and Thrawn, who is obviously not a Rebel, but works perfectly on that team.

For the HAAT, Phase 1, I use Commander Luke by himself.

For the bulk of the HAAT (from about 20% of Phase 2 remaining all the way to the end) I use Admiral Ackbar lead with Commander Luke, BB-8, Thrawn, and Asajj.

For Territory Wars I use him as the lead on defense of a team of Rebels, but in Territory Battles, he leads a different group, very much dependent upon phase requirements.

Kanan

Agree with @Val_Galahadred it depends on where to use.

HPit, If you have JTR, team up with CLS, B8 and HS and you won't need a 2nd team.

HAAT:
CLS + HS for P1 (can solo P1)
JTR for P2 (won't solo it, but can do some dmg)
Ackbar team to solo P3 and P4.

TW
The team you mention: CLS (L), Leia, HS, Ezra
First, I need a tank for the 5th slot (can it be Kanan or Obi Wan)
Second, I would take out one attacker for a healer.

For TW, I would really suggest you take out Leia and put her into a Nute Lead Team, keep Kanan on a Phoenix squad, put Obi Wan as the tank and a good healer (ideally CHS) - that's the same team I would use in LSTB.