(R' D2 B' U')
(L^' F2 L2 R B2 L # F) //11 4b2
(B2 L^ F2 L^')
(B2 L^2 D2 F2 D2)
^ = w, # = Lw' L //slice +1 with 4x insertion

L D' R' U
F B' (R' D2 R B) //10 2c3
(U2 R^' F2 D2 L' F2 L #)
(F2 U2 [F2 D2 L2]) //M+S
^ = w, # = Lw' L //+1
[] -> F B R2 D2 F B' //-1

B2 R2 F
(R' U R' D' R D) //9 2c3
(B2 L D2 R2 D2 L' F2 D2 L)
(F' B' R2 F B)

idk why i totally forgot about extending eo on normal
R' F2 L2 F         // eofb               (4/4)
(R' U)             // rzplr-eofb         (2/6)
(R' D' R D)        // drlr-eofb [4b2 2e] (4/10)
U2 L2 F2 L' F2 R'  // htr-drlr           (6/16)
D2 R2 D2           // frud               (3/19)
B2                 // fin                (1/20)

(F' U' L2 D B')
(R' L' U R U) //10 4b3
(R^' B2 R' F2 L^2 F2 U2 R^')
(F2 U2 B2 D2)
^ = w

i even did U F on this eo but still miss this:
F2 U2 F2 R'
U F' D' R2 D2 U' F //11 4b2
B2 L2 U F2 U' B2 //17ls, +2

(F' B' L2 R' B')
(D') L U R' U //10 4b2
R (F2 L^' B2 L' # B2 L)
(D2 B2 D2)
^ = w, # = Lw L'

(B D' L)
(B' U R2 B U F U') //10 4a1
(F') B U2 D2 F #
U2 D2 L2 U2 F^2 D2
^ = w, # = Fw2 F2

others:
(B D' L)
(U F D' F2 D B) //9 4b2
(U' F D' F2 D B) //9 4b2
extended eo (B R2 D' L) also gives 4b2

(D' B L)
(U' R2 U2 F B' U) //9 2c3, 2var
missed (U B F' U2 F2 D)

D2 B' L2 B'
L2 F2 L' R2 U //9 2c3
R (L2 U2 D2 B2 R F2 R)
(F2 D2 R2 U2 D2)

found this late and didn't try much:
(R) R2 D' R'
D2 L2 B D B //9 4a1, 2var

F' L B'
(D2 B2 R F2 R' D) //9 4a3
(R^) D2 F2 L^' D2 L^
B2 U2 D2 L2 # U2
^ = w, # = Lw' L

oh why

D L U F
(D L2 B2 D' L) //9 2c4

(D U' R F')
(D L2 U L' U) //9 4a3

F D' R
F U2 R2 F2 U B2 D' //10 4b3
(B D2 F2 # R2 B L2 B^)
(U2 L2 F2 L2)
^ = w, # = Fw F'

(D2 R D B)
(R2 F2 L' U2 L U) //10 4b2
D2 B2 U2 R' B2 R
B2 U2 F2 B2 L2 D2

very exhausting attempt

other drs:
(B2 U' B')
(R2 D' R B2 U R U') //10 2c3, 2var

(D2 B2 U' B)
(R D2 L2 D' R D) //10 4b2 2e, reverse B to get 4b2 4e
(R' U2 R2 D R D) //10 4b2 2e, reverse B to get 4b2 4e

(F2 B2 U)
(B R' D2 R2 F' L2 F) //10 4b3 0e

(F2 B2 U' B) //dr-3c
(B' U2 B D' B' U2 B D) //12-3 2c4

D' R' U F' B
R U2 L2 U' L //10 4a1 6e
(U R2 U L2 F2 L2 U)
[(U D L2 U' D' L2)] //23-2

notice that L face looks like Nperm so let's do pre-auf to cancel more moves with normal:
[] -> (L' U D L2 U' D' L) //24-4

U' B D' R'
U2 B D B L2 U2 F //11 2c3
(D^ L2 F2 D L2 B2 U #)
(B2 R2 U^2 B2)
^ = w, # = Uw' U

(B2 U L2 F' D)
(L) B2 L' F2 R' //10 4b2 4e

(B2 U L2 F' D)
(U2 L' U2 L R2 F) //11 4b2 4e

(U) B' L' F2 U'
L (F L2 F L) //10 2c4

switched (U' D2 B' R2 D) but only did B2 R2 U2 and missed D2 B2 R2

B' L' B'
(L U L # B2 U F2 U^ L) //11 2c3
(D B2 D^' L2 B2 D^')
(L2 D2 L2)
^ = w, # = Uw U' //slice +2, using 4x insertion cuz it's cool

not quite satisfied with a 22 on this scramble

F D' R' F
(U) R' B2 D R D' //10 2c3
F2 L # D2 L F2 R^2 B2 L B2
^ = w, # = Lw2 L2

oops there's 19
when can i stop missing dr opt in stupid ways like this

(B L D' R)
(F) U2 B2 U2 B D' B' //11 4a2
D R2 F2 D2 B2 D
F2 R2 F2 L2 //21ls, at least+2

(L') F2 U R
B D B' L2 U L2 U' //11 4b2
R2 L2 F U2 B'
U2 D2 R2 B2 D2 //21ls, at least +2

U L2 F' L R'
F L2 B' U' //9 4a3
B (R2 F' U2 L2 D2 B2 U2 F)
(U2 F2 U2 R2) //22ls, at least +1

ok maybe i should have submitted any of them giving 23

B2 U' D2 L
(F U2 B D') //8 4a3
(L2 F) D2 F^2 L2 F^' U2 F^'
R2 D2 F2 L2 D2
^ = w

so bad
B R2 D
R2 U2 L D2 F2 L B' //10 2c3
(R') R U2 B2 U2 B2 R
U2 D2 B2 R2 U2 B2
+1

others:
R' B R' D
F' L D2 B R B //10 2c3

R2 B D'
B' R' B F2 R' B R //10 2c4

B L D U2 B'
D R' D' U2 L //10 2c4

(F) D U2 F
(L' B2 D' R) //8 0c4
(D^' B2 U^ L2 D2 F2 D^ R2 D^)
(B' F D2 B' F')
^ = w

(B2 U) U2 B2 [R2 U2 B2] D //8 2c3
(R^' B2 U2 L^' B2 L^' B2 R2 #) //16 M+E
^ = w, # = Rw' R
[] -> U2 B2 U2 R2 U2

backup 20:
(L') F2 U R U D L' //7 4a3, cool premove to 6c8e
(B2 D^' F2 D^' R2 D2 L2 B2 D)
(R2 L2 B2 D^2)
^ = w

mallard gives this quite reasonable 18:
                     // eofb               (0/0)
L F2 L               // rzpud-eofb         (3/3)
(U2 L2 R2 D R')      // drud-eofb [2c3 6e] (5/8)
(U L2 F2 U B2 L2 D)  // htr-drud           (7/15)
                     // frud               (0/15)
(L2 B2 L2 R2)        // fin                (4-1/18)

(D2 R U' R)
(B D F L2 D') //9 2c4
B (L2 F U2 B' D2 B)
(R L F2 R L')
+1

(R2 F D B')
(R' U D R2 D L) //10 2c3 6e
U^' (D' F2 D^2 L2 F2 L2 D^')
(F2 R2 U2 F2)
^ = w

R F'
U' D2 R D2 F2 B2 R' //9 2c3
(U') B2 U B2 U'
B2 U2 F2 R2 U2 R2

stopped early, maybe missed something better but I'm lazy

(U' R D' R' D)
(F') R U2 L B2 R' B' //12 0c0
(D2 L U2 D2 L)
(F B R2 F' B')

wow this is already the second time in the past week when I'm almost feeling hopeless and something really good just jump scares me.

L F2 R
D' B' D2 F U' F' //9 2c3
(R2 D B2 L2 D R2 B2 U)
(R2 F2 R2)
+2

B F2 U' R'
(B' U L2 D F) //9 4b3
{D' F2 U2 L2 D} F2 [D
L2 R2 B2 U2 R2 U2] //22

but wait:
[] -> D' R2 D2 R2 L2 B2 //21 ls
{} -> D R2 U2 B2 D' //+0

B' D' F' L'
B' R2 D' F' U' F' //10 4b3 0e
(F2 D F2 D2 L2 U' R2 F2 D')
(F2 U2)

(B R2 B R)
(U L2 F' U D2 B) //10 4b2
D2 # F2 L2 U' R2 U^
F2 L2 U2 L2
^ = w, # = Dw D'

D' (R' L D')
(F L' F2 L' B' L') //10 4b2 4e
B' R2 D2 B^'
R2 B2 # R2
^ = w, # = Bw B'