(D' L D2 R, U') L2 U2 L2 F2 U' // 2c3 (10)
R2 F D2 B' D2 B L2 D2 F2 // slice (19)
+1 -> 20

other:
R2 B' L D2 R, F2 U2 F2 U' F // 2c3 (10)
R2 B' R F2 L, F2 U2 F2 U' F // 2c3 (10)
(D' L D2 R, U) D' L2 D2 F2 D // 2c4 (10)
(D) B U, F' R' F2 L2 B D2 L // 4c3 (10)
(D) D2 B U, F' L' U2 L U2 L' B // 4b2 (11)

L D2 L2 F', U' L' D2 L2 D' R D' // 2c4 (11)
L' D2 L B2 D2 L D2 L // htr (19)
B2 D2 L2 F2 // slice (23)
+0 -> 23

sad

F D2 R F (R2 U L U' R) // 2c4 (9)
F D2 R F (R2 U' R U' L) // 4b2 (9), 21 from (L2 B2 U) switch which i checked but didn't find
D B2 L' F, D (B2 U B2 U' B2 U) // 4b2 (11)
D L' F' (U L) R' F2 U2 R D2 R' // 4c3 (11)
D L' F (R U', D2 B2 L' R D) // miscounted parity and didn't check, it's 4c3 with easy 19

L R2 U' R, B' U B' U B2 D' F
(D R' U F) L (D2 R D B2 U L)
(D R' U F) D L (D2 R D B2 U)
(F' D L' U', L B R' F' L B R)

(U' R F U') // eo (4)
(L2 F2 B L' B') // 4b2 (9)
R' F2 L F2 R B2 R' // htr (16)
B2 U2 D2 B F U2 F' B' // solved (24-2=22)

(D R2 B)
R' U' L R2 D' L2 F2 D
(R' U2 R D2 L U2 L')
(F2 L2 U2 F2 U2)
+1

U R (U' B' R) // eo (5)
L2 F' U2 R2 D // 2c3 (10)
B^ R2 U2 B D2 B^ // htr (16)
D2 L2 B^2 U2 // slice (20)
^ w

other:
L2 B' R D L, B L2 F' D2 F2 B D' // 4b2
R2 U2 F' U2 B' U2 D2 R2 D2 R2 // slice in 22 but it's doomed

(R L2 D F, D) L2 U2 R' F2 R2 D // 2c4
L' F2 R' U2 R U2 R // slice+2e in 18, 2e is preserved in htr before R U2 R so we can do:
L' F2 R (R' U2 R) // htr
(B2 U2 R2 U2 B2) // slice in 22, doesn't +0

L (B R) // eo (3)
(L2 F D) // jzp (6)
R2 [D2 F2 D] // 2c3 (10)
(B' D2 B' D2 R2 D2 R2 B) // htr (18)
[] = F2 U2 B2 D' R2 // extend, S+E (20)
+1/+2

should have found 22 off the 15 to htrs but i did not want to do 7 HT finish
dr is 20 optimal but honestly unfindable
(R2 F U2 D2 R2 B' R2 D2 F)
can't really switch after (R2 F) because you have to blocky fish the other side to find the correct variation
21 seems somewhat findable but you have to do (U2 F D2 B) and switch

(L) F R B' L, D2 B' R2 B' D // 2c3 (10), annoying not to find the 22 from this

(B) F D L B, R D' R U2 L // 2c4 using cool 5c6e case (10)

i found optimal after the first 7 moves (23) but none of the optimals use that dr
(B) F D L B, R D' R' U L2 D2 L // 2c3 with extension trick (12)
(U2 F2 D^' R2 D^' L2 D' F2) // M+E (20)
^ w // M in 20, but it's +3 -> 23

R (L U' F2 R) // eo (5)
D B2 L2 F // 2c3 (9)
(U') D' B2 L2 B2 D2 B2 D' // htr (17)
R2 L2 F2 // slice (20)
+1

there is a unique 20 off this dr but it's hard enough that i don't feel bad for missing it

other:
L2 D' R' L F', U' F2 L2 D R // 4b2 (10), 23 optimal somehow