All orange text is recently updated.
All red text warns you of moves that will cancel your B+K before impact, and in most cases, deals a lot of damage.
Patroklos
6B.B = 1.30 bar (Second hit only, third hit interrupts at .74 and crumblestuns. First and second hit gives you .55 bar, impacts third.)
1bA+B+K = .90 bar (Impacts third automatic hit.)
Z.W.E.I. -- No gauge given for E.I.N. attacks.
1B = 1.25 bar (1(B) instant release interrupts at .99 bar, 1(B).K impacts.)
22B = .99 bar (22B.B interrupts at .60 bar and crumblestuns.)
Leixia
1B = .99 bar
4A+B = .75 bar (Second automatic hit interrupts and launches.)
66B = .90 bar (66B.B interrupts at .80 bar. 66B.bB gives .90 and is impacted.)
22kA = .90 bar (22kA.A interrupts at .75 bar, but guarantees an impact.)
Natsu
2K.K = .90 bar (second hit only, cannot be done if 2K hits at all.)
11K = .90 bar
BT A+B = .80 bar
Raphael
Preparation B.bA+B+K = .90 bar (only the BE connect, loud, obnoxious sound, 22hits, +/- 44 total damage taken, impacts)
Viola -- No gauge given from orb attacks.
1B = 1.30 bar
44B = .90 bar (only last hit - doing B+K on the first hit crumblestuns and stops gauge buildup too early. 44B's second hit only gives you .90 bar if the orb is set. If it's on her, you only get .55 bar.)
9A+B = .90 bar (9A+B's orb toss (when with her) will miss, unless they're at tip range, giving you .60 bar. When orb is set, it will always hit you, giving you .75 bar.)
Pyrrha
B+K = 1.30 bar (B+K.B interrupts at 1.0 bar. Be careful, lots of damage will be taken, standard crumblestun and attack throw possibility.)
Siegfried
2B = 1.30 bar (If they do 2(B), it impacts all possible inputs, except iK which interrupts at 1.25 bar and knocks down.)
11B = 1.30 bar (If they do 11(B), it impacts all possible inputs.)
B = 1.30 bar (B.B interrupts at .90 bar, but impacts B.B.K or B.B.2A/2(A). (B) ~ iK interrupts at 1.25 bar and knocks down.)
Hilde
3B = .90 bar (3bA+B+K interrupts at .80 bar and launches or does the attack throw. 3B.B gives 1.00 bar. 3B.A interrupts at .75 bar and knocks down.)
6B = 1.30 bar (6B.B interrupts at .80 bar, impacts on 6.B.B.B.)
B = .95 (B.B interrupts at .60 bar.)
Xiba
B = .90 bar (B.B interrupts at .80 bar and knocks down.)
2B = 1.30 bar
66B.B.B = .90 bar (Second hit does not affect gauge. Impacts third hit.)
Chaneling Kick = 1.60 (This is the kick that can be done after 6A, 6B, and A+B.B. If they do the BE, it stops building at 1.20 bar and knocks you back.)
Ivy
22A = 1.30 bar
6(B) = 1.30 bar (6(B)8/2 interrupts at .70 bar)
FC 1(B) = .99 bar
7/8/9 B+K = 1.30 bar (the second hit of the move whiffs.)
B+K = .90 bar (If they're directly next to you, you'll impact the third hit, but if they're more at a distance, the third hit whiffs.)
Cervantes
4aB = 1.90 bar (4aB.B interrupts at .90 bar.)
1B = .99 bar (1B.B interrupts at .60 bar.)
Aeon
22K = .99 bar
44B = 1.60 bar (44B.A interrupts at 1.50 bar, impacts 44B.A.A.)
Tira
JOLLY ONLY:
6B = .90 bar
EITHER STATE:
7B = 1.30 bar (Very, very close range. You literally have to be touching them when they jump back.)
4B+K = 1.30 bar (4B+K.B crumble stuns.)
WR B.K= 1.20 bar (Second hit only, use it after blocking the WR B.)
GLOOMY ONLY:
4B.B.B = .60 bar-first hit, air-impacts third hit.
4B.B.B = 1.10 bar-second hit, third hit interrupts at 1.00 bar but doesn't launch, can be done on block.
4B.B.B = 1.30 bar-last hit, cannot be done on block.
Nightmare
236A = .99 bar
I couldn't find any .75 bar+ ones for Mitsurugi.
Maxi
Right Outter B = 1.30 bar
a+bG = .99 bar (A+B.B interrupts at .40 bar and launches.)
Yoshimitsu
1A+B = 1.30 bar (1(A+B) impacts all except i66, 1A+B.B interrupts at .75 bar.)
Again, I couldn't find any .75 bar+ for Dampierre.
Voldo
BT 66B = .99 bar (BT 66B.K interrupts at .80 bar and knocks down.)
Astaroth
1B = .99 bar (1B.B interrupts at .75 bar.)
I couldn't find any .75+ ones for Devil Jin, but almost all of his moves are able to be B+K countered.
Alpha Patroklos
WR B = .99 bar
2B = .99 bar
Algol
44A = .99 bar (44A.A interrupts at .60 bar.)
Pyrrha Omega
4K = .99 bar
B+K = 1.3 bar (B+K.B interrupts at .95 bar. Be careful, lots of damage will be taken, standard crumblestun and attack throw possibility. )