(L) B L'
U' D' B' L2 U2 F' // 4a1 2e 9 (4 var)
(U R2 B2 L2 U' R2 U') // HTR 16
(R2 D2 L2 F2 U2 B2) // Done 22

I hate variation hell

(F2 R2 B')
(D L2 U' L) // 2c3 7
R2 D' # F2 L2 U'^ F2 U' // HTR 14
D2^ F2 R' L U2 R L // Slice 7-2/19 (-1)
^ = w, # = E   +0

Other:
(F2 R2 D L)
(D' B2 U B) // 2c4 8

(L U B' F2 D)
B2 L' F' L2 F // 4b3 10
(U2 R #) D2 F2 R'^ B2 R^ // HTR 17
D2 B2 L2^ U2 B2 // Slice 22
^ = w, # = M2   +1

Other DRs:
U' (R' B' U)
(L), B' U2 L2 F' L // 2c4 10

U (R' B' U)
(L), R2 U2 B U2 B' L // 2c4 11

(L U B' F2 D) D2 B2 L' F' L2 F // 4a1 2e 11

(L U' B R)
U B2 D2 F U2 L2 B' // 4a2 11
(B2 U^ R2 U2 B2 U) // HTR 17
(F2 U2 # L2) // Slice 20
^ = w, # = (E) // +1

Variation hell, this DR has 8 variations, 20 is possible, see Fabio's recon.
Had many DRs from this EO, all others were 4+ qt. Shortest was:
(L U' B R)
U, (U2 B2 R2 U) // 4b5 9 (4 var)

U B' R F'
R, (L2 D R2 D R) // 4a3 10
(B2 U) U F2 R2 F2 L2 U // HTR 18
B2 R2 D2 F2 L2 // Done 23

(L' D U' R')
(D), F B2 D2 F' R2 D // 2c3 11
R2 B D2 R2 F D2 F // HTR 18
B2 R2 D2 B2 R2 // Done 23

B (L2 F')
(R), B2 U2 L2 U' R // 2c3 8
D F2 D L2 F2 B2 U' # // HTR 15
B2 U2 F2 L2 U2 # // Slice 20
# = E2   +1

(B' L2 D L F)
(U2 L B2 R) // 2c3 9
(U') U'^ L2 F2 D^ // HTR 14
L2 D2 L2 U2^ B2 R2 B2 R2 // Slice 22
^ = w   +0

I also had a slice in 21, but no +1
Other DRs:

U' B L2 D
L, U2 F' B2 L' B2 R // 4b2 4e 11

(B' D) F2 R2 U
L' U2 B2 L' B // 2c3 10

B2 L F L U
B2 R2 D2 R B' D2 F // 4b2 6e 12
# D2 F2 R D2 L^ // HTR 17
B2 U2 F2 B2 // Slice 21
# = M', ^ = w   +2

Optimal DR finish
Other DR:
F2 L' U2 L'
U2 F2 D F' D2 B // 4b2 4e 10 (2 var)
optimal from this is 23

(F' D)
L' F, R U2 D2 F2 L2 F // 2c3 10
R F2 B2 D2 R^ U2 R // HTR 17
B2 R2 # F2 B2 // Slice 21
^ = w, # = M   +1

21 optimal with 5qt

D R'
D' F, (D' B2 D' R2 U2 F) // 2c3 10
(D'^) F2 B2 L2 U B2 U' # // HTR 16
F2 R L' D2 R' L' // Slice 22
^ = w, # = E'   +1/23

Had too many DRs: 2c5 10, 4b4 10, 4a3 10, 2c5 10, 4b2 4e 10, 2c4 9, 2c4 11, 4a2 11, 4b5 10, 4b5 11, 4a4 8, 4b2 4e 10, 4a4 10
Many of them had multiple variations as well, best optimal from these is 22 (I think)

U' B' D' B' R
(B2 D R2 U2 B' R2 F) // 2c3 12
(U') B2 U2^ R2 U' F2 B2 R2 D // HTR 21
F2 U2^ R2 L2 // Slice 25
^ = w   +0
This scramble is so bad even though it's 4/4/8

(R) U D L
F D2 B2 D2 F' U2 B' U // 4b2 6e 12
(D2 U2 F2 U2 F U2 B') // HTR 19
(U2 F2 D2 R2 F2) // Done 24

F' D2 B2 L
(U' F2 B2 D' R2 U F) // 2c3 11
(D F2 L2 U R2 U) // HTR 17
(L2 B2 F2 L' R' U2 L R) // Done 8-2/23

L' D L R' U
L' D2 B' U2 F // 2c4 10
(L' U2 L') U2 B2 R # B2 R^ // HTR 18
F2 D2 B2 D2 // Slice 22
# = M, ^ = w   +1/23

(F) U' B D B'
(L2 F2 L2 F2 R D) // 2c3 11
D2 R' F2 R U2 R // HTR 6/17
D2 L2 F2 D2 B2 R2 F2 R2 // Done 8/25

B' F R' D
(F2 R2 B' R F) // 1qt 4e 9 (2 move extension)
(U2 F2 # U2 L^) // HTR 4/13
(U2 F2 U2 B2 R2 B2) // Slice 6/19
^ = w, # = (M')    +2/21

22 I found from the 7 mover:
B' F R' D
(F R B) // 4b5 7
(L' F2 R' U2 R) U2 F2 R' D2 R // HTR 10/7
U2 D2 R2 F2 D2 // Done 5/22

I was so close to finding the 18, I found R2 B2 R2 F R B after eo, but forgot to also widen the second R2, which gave HTR-skip

(R D B L')
F, (L2 D U L2 F) // 4b2 4b 9
(U^ B2 R2 U2^ F2 U #) // HTR 6/15
(F2 U2^ B' F' D2 B F) // Slice 7-2/20
^ = w, # = (E) // +1/21

(B D2 R' U')
R' U2 F2 B2 R' // 4b2 4e 9
F'^ R2 F' # (F' D2 F^) // HTR 15
(U2 R2 U2 F2 D2) // Slice 20
^ = w, # = S2   +1/21

Surprised that this is optimal for this DR and its variation L' B2 U2 D2 L

(L') B2 L
B L2 F B2 D // 4b2 6e 8
F'^ D2 B' R2 L2 U2 F' # R2 F'^ // HTR 17
B2 D2 // Slice 19
^ = w, # = S2   +0/19

B' L B
(D, L D' R2 B2 D) // 4c3 9
R B2 R (R2 U2 B2 L) // HTR 7/16
(F2 L2 U2 # F2 U2 $ F2) // wrong slice 6/22
# = (E'), $ = (E)   +2/24

Spent a while checking
(U B L2 B)
(D, U2 B2 D2 L' U) // 4a2 2e 10
before finding the 4c3 9 with 4 variations, so didn't have enough time for a good finish

R' D2 F U D'
L, B U2 L2 B' L' // 2c3 11
R2 F'^ L2 F^ D2 # R2 B^ // HTR 18
U2 D2 R2 U2 // Slice 22
^ = w, # = S   +2
Optimal DR finish

F (R D' F)
U2 L' D2 R' D2 L U' // 4b3 11
(B2 R^) R^ B2 U2 D2 L'^ // HTR 18
D2 F2 B2 R2 # F2 // Slice 23
^ = w, # = M   +1

R' F R2 U
(R' B2 L' F' L2 F) // 2c3 10
R'^ B2 R' # U2 R // HTR 15
U2 D2 B2 U2 D2 R2 // Slice 21
^ = w, # = M'   +1

(B) R' D' F'
(D2 U2 L' F2 B2 D' L D') // 23c 12 (F2 B2 arbitrary)
(R' #) D2 B2 R^ D2 R // HTR 6/18
// F2 L2 B2 D2 F2 U2 // Slice 6/24
// ^ = w, # = M   +1/25
I'm so tired, could not think this attempt

(L F2 R)
(D' B'), L2 U' B // 4a2 6e 8
F2 D # (U' R2 B2 R2 U B2 U') // HTR 9/17
(B2 U2 # R2 F2 R2 F2) // Slice 6/23
# = E2   +1/24
I really struggled to find any finish from this DR
I also had so much variation hell:
4b2 2e x16 (11)
4b3 x8 (10)
4b3 x16 (10)
4b3 x4 (11)
4b4 x4 (11)

(F L' U B)
U', (U2 R' B2 L2 R2 U) // 4a2 2e 11
(F2 R' ^) R2 B2 D2 L' // HTR 6/17
B2 D2 F2 U2 L2 # B2 // Slice 6/23
^ = w, # = M   +1/24

(F L' D R)
U, (B' D2 F' R2 F2 U') // 1qt 11
F (F # L2 U2 B #) // HTR 5/16
(D2 U2 F2 L2 U2 R2) // Slice 6/22
# = S2   +2/24

(R B' F2 L)
B D2 F B2 D F2 D // 4a2 11
(F #) R2 U2 R2 U2 R2 F' # // HTR 7/18
L2 U2 F2 L2 U2 // Slice 5/23
# = S2   +2/25

R' B'
(L', R2 B2 U B2 U2 L) // 4b2 0e 9
U2 # L2 U' F2 L2 F2 L2 U # // HTR 8/17
F2 B2 L2 U2 // Slice 4/21
# = E2   +1/22

U' D' F U
F, R F D2 R2 F' // 4b4 10
R D2 R' (F2 R'^ U2 R^) // HTR 7/17
(D2 F2 D2 B2 L2 U2) // Slice 6/23
^ = w   +0/23

This is the only 23 out of all 4 DR variations

(L' R' F D)
(R' D2 L D2 R' F) // 2c3 10
(U2 R' F2 U2 R' D2 B2 R'^) // HTR 8/18
(D2 R2 # D2 R2) // Slice 4/22
^ = w, # = M'   +1/23

U' (D' F R2 U)
(B, L R' U2 L R2 F') // 4a2 12
F2 R^ (B2 D2 U2 R') // HTR 6/18
(D2 R2 # B2 D2 F2 D2) // Slice 6/24
^ = w, # = M'   +1/25

51 EOs checked

D F L B'
R F2 R' D' // 4a4
(R F2 R') F2 R2 B2 R'^ D2 R^ // HTR 9/17
U2 D2 F2 D2 L2 D2 // Slice 6/23
^ = w   +0/23

D' R' L B'
(U' R2 U2 D' L') // 2c4 9
D # (B2 D F2 L2 U L2 U^) // HTR 8/17
(R2 D2 B2 R2) // Slice 4/21
^ = w, # = E'   +1/22

(B' D2 R F)
R2 D' L2 D // 4b3 8
B2 R^ (R # B2 R2 U2 R) // HTR 7/15
(D2 L2^ B2 F2) // Slice 4/19
^ = w, # = M    +1/20

(B F L U' R)
(B'), U B2 D' F U F' // 1qt 12
B2 L2 U2 F2 U // HTR 5/17
F2 R2 U2 // Slice 3/20   +2

F2 R U'
(L', R2 U2 B' F2 R') // 4b3 9
D2 B^ (F' R2 F' #) // HTR 5/14
(R2 U2 R2 D2 B2^ R2) // Slice 6/20
^ = w, # = S   +1/21

(U B' D)
(B F, D2 L2 R' B L' B) // 4b2 6e 11
R U2 L^ D2 R # F2 R'^ // HTR 7/18 (found by blockbuilding)
F2 D2 // Slice 2/20
^ = w, # = M2   +1/21

L (R' F' U2 L)
(D' U' L2 B2 D2 U B) // 2c3 12
(L2 U') D' R2 F2 B2 U // HTR 7/19
R2 F2 R2 B2 D2 F2 // Done 6/25

(F' D L' R D)
B2 L2 D2 R' F' // 2c4 10
L' # F2 R (B2 U2 F2 R U2 R) // HTR 9/19
(B2 F2 R2 # U2 B2) // Slice 5/24
# = M2   +1/25

U' D' L2 B'
L', (U' B2 D' R') // 2c3 9
F2 U'^ B2 U^ F2 U' // HTR 6/15
(U2 L2 B2 R2 B2 R2) // Slice 6/21
^ = w   +0/21

D (L D')
F' B2 R' B2 R' // 2b6e 8
F2 # U2 R2 F' % R2 B^ // HTR 6/14
D2 R L F2 R L // Slice 6/20
# = S', % = S2, ^ = w   +2/22

(F) B D2 R' B
(D2 L' F2 R U') // 2c4 10
R^ D2 R F2 U2 R D2 R // HTR 8/18
F2 B2 R2 # F2 // Slice 4/22
^ = w, # = M   +1/23

D' (R2 B U)
(D2 F2 L' B' R2 F') // 2c4 10
U2 L'^ D2 R # F2 R' U2 R^ // HTR 8/18
B2 R2 U2 // Slice 3/21
^ = w, # = M2   +1/22

(U' L D F)
R2 U2 F2 D // 2c4 8
R (U2 R') U2 B2 R' B2 R // HTR 8/16
B2 U2 F2 B2 U2 // Done 5/21