(F' D R' B U') 
R (B2 U2 R B2 L) // 4a2 4e (11)
B (F' R2 L2 F' R2 F) // HTR (18)
(R2 D2 B2 L2 D2) // slice (23)
+0

:(

(U F L2 B')
D' F2 B2 D U2 R' // 4c3 4e (10)
(U) U F2 U2 L2 B2 L2 U' // HTR (18)
F2 L2 U2 R2 // slice (22)
+1

I'm just bad

U (U2 B2 U')
F' L F B (L2 U2 F) // 2c3 4e (11) 8c8e var heavy af
(D2 F2 R' U2 L' D2 L) // HTR (18)
(U2 R2 F' B' R2 F B) // slice (21)
+0

Fortunately the first variation I tried. Edit: it's the only sub 22 from this set lol

Other:
L U' B R L - (D, B D2 B U2 B U) // 4b2 2e (12)
U' (U2 B2 U) - R F2 L', U2 F B R // 2c3 4e (11) vibe dr with variations
(R' U L B R) - (F U, F B' U' R2 U) // 2c3 2e (12)
(U) U D F D - B, F2 R' D2 R2 L2 F // 4b2 2e (12)
(R' U' L B R) - (U2 B' F2 U' L2 D) // 2c4 (11)
U' (U2 B2 U') - (L) D2 F' B D2 F L // 2c3 6e (11)

(R2 D R' F)
U' L2 U' B2 L // 2c3 4e (9)
(L2 U B2 U' B2 R2 L2 D') // HTR (17)
(B2 D2 B2 R2) // slice (21)
+1

Note to myself: check 2+2 on both sides, don't miss obvious drs

I got baited by this:
(D F' U B2 D') // blocky eo af
(R' ^ B L' B') // 5q (9)
^ D2 // 2c3 2e (10) blocky but bait, and multiple variations

(R D F) - U L' D' F2 D U2 R // 4c3 4e (10)
(L) L' B R - U D F B' U R2 F // 4c4 4e (11)
(F D L2 U) -  (D2 B, R D2 R' B') // 2c4 (10)
(F U B2 D) - (R B2 R' U2 R F) // 0c4 (10) 21 opt with 20 to slice somehow
Somehow missed 2c3 2e in 10 from this eo

(B2 L2 D')
(F', L' F R2 D2 L B) // 4b2 4e (10)
L2 B2 U2 L F2 U2 L' // HTR (17)
U2 R2 U2 R2 D2 B2 // finish (23-1)

Bruh, so many findable sub22s here

Other:
(L2 B2 D) - F ( F2 B2 R' D2 R' L2 B') // 4a1 4e (11)
(L2 B2 D) - B2 R' L B2 R' F R L // bad (11) with 6c6e
(F) U' D R F - U2 R2 D B2 D' R // 4b2 2e (11), 21 to slice but no +0

How did I miss 
L2 R U 
(B2 L' R F' B2 R) // DR (9+4 2c4e) for a 20

(B2 F D)
(L, F B2 D2 B' R) // 2c3 2e (9)
(F D2 L2 B L2 B) // HTR (15)
(L2 F2 D2 R2 D2 R2) // slice (21)
+0

bruh

(U' L' F2 U' R)
(F' B U' D F) // 2c4 (10)
(R2 F2 B2 U F2 U' R2 U R2 U') // HTR (20)
(F2 D2) // slice (22)

I had a 23 from this dr but then I randomly tried 3move blocky setup to "J shape"

F (L R2 F)
U (D' R' D R' U') // 4b2 2e (10)
(L2 U2 B2 R D2 R) // HTR (16)
(B2 U2 B2 R2 U2 L2 D2) // finish (23)

U' D' R
(D B2 U' B L2 D2 B) // 4b2 4e (10)
(L2 R2 B2 U' B2 R2 D') // HTR (17)
(L2 B2 R2) // slice (20)
+2

U' (F2 D' L D)
F2 L F2 B R' F // 4a1 2e (11)
L F2 B2 R B2 R // HTR (17)
B2 U2 D2 R2 F2 // finish (22)

This is just (U' R U) -> (F2 D' L D) ext of 10+4c3. (B2 U' R U) gives 4a1 4e (11) but I couldn't find anything there.
Bro, forgot to switch (U) U' R2 D' - F' which gives a 2c3 4e (10) and an easy 21

(U L)
(F') R2 L2 D F2 D' L2 F B // 4b2 2e (11) 
D L2 U' // HTR (14)
B2 R2 D2 F2 R2 U2 // finish (20)

L (R' F D2 L)
(U) U2 F B2 U2 R2 D' // 4b2 (2e)
B' R2 B' // HTR (15)
[R2 B2 R2 F2 U2] // E slice (19)
[] = U D' F2 R2 F2 L2 U D // solved (21)

this is just an extension of
L (R' F D2 L) - (U) R2 D2 B' F2 D // 4b2 0e (11), which has an htr in 14, 2e+slice sth sth into 22 backup. 

You can actually get a 20 from this rzp by doing +2 ext:
L (R' F D2 L)
(U') U2 B2 U2 R2 D2 B' D // 4b2 2e (13)
B' R2 B' R2 B2 R2 F2 // finish (20)

U (R' F' D)
(L2 U2 R2 L' B) // 4a1 4e (9)
L' (F2 [L D2 B2 R']) // HTR (15) and 2e+s in 17 so
[] = L' B2 R2 U2 F2 L' U2 D2 L' R // finish (19) sliced live

([U D]) B' U 
F2 R L2 D2 F L2 F' // 4b2 2e (11)
B2 L B2 R' // HTR (15)
[] = R2 U2 L2 U' D' R2 B2 // solved (20)

L' (F R L')
(B') B' U B U2 B' // 4a1 2e (10)
F2 D R2 U' F2 B2 D // HTR (17)
R2 D2 F2 // slice (20)
+1 bf

Other
L' (F R L') - (B) B2 U' B2 U B // 4b2 2e (10), 19 to slice 2q but it's +3 wtf
F' R2 U' B - D', R' D2 F2 L' R2 U // 4a1 2e (11)
(B) R' F B - L R' D', R F2 R U' // 4b2 4e (11), 22 to slice 4q backup but it's +1 bro
(D' R D' B' U) - (D2 B2 L2 B R) // 4c3 (10)

(L) U' F' R L'
F2 U D B U2 F // 2c4 (11)
(U' B2 U R2 U' R2 U') // HTR (18)
(F2 D2 L2) // slice (21)
+0

4q 2c2e "J" set of drs with two blocky af variations. 

(U2 L B' R')
(B' D', R2 L2 B' D) // 2c4 (10)
U2 B' (F D2 F D2 L2 B) // HTR (18)
(D2 R2 U2 D2) // slice (22)
+0

Other:
U B2 F L' B' - U/U' R' D L // 2c3 4e (9)
U' D2 F R B' - U L' D' R // 4c3 4e (9)

F R' F R L
U D (U) // 4b5 (8) mythical pull
(B R2 F U2 B' U2 B R2 B) // HTR (17)
(R2 L2 B2 U2) // slice (20)
+0

This was satisfying.
Edit: I knew there was some shift magic sub20 but I just couldn't prove it. 
Tbf I didn't know you could shift this like that