[porkynator]

1.
Scramble: R' U' F R2 U2 B2 D' F2 R2 B2 D2 F' L U R' F' L' R B L B L' B R' U' F
Solution: B R' B' F L D U2 B F' U F' D2 R2 U' R2 D' L2 U F2 R2 U' L2 D R2 (27)

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B R' B' F L //EO (5/5)
D U2 B //Simplify + setup 3-1 (3/8)
F' U F' //DR (3/11)
L2 B2 L2 //Two squares (3/14)
D2 R2 U' * B2 R2 //2c2c (5/19)

* = R2 D' L2 U F2 R2 U' L2 D B2 (10-2/27)

It's the first time I insert this alg (or similar). I spent some time checking that I could cancel more with some shift/rotation of this, but in the end this 10-2 is IF optimal

2.
Scramble: R' U' F L R2 F2 R' U2 L2 B2 F2 R' B2 D2 F L2 U' F2 U2 F D' F' L U R' U' F
Solution: U2 F2 U L2 F2 R2 L2 B L2 R B2 F' R2 F' R U D' R2 U' D F2 L D (23)

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(D') U2 F2 U //EO (4/4)
R2 B' //Simplify 4-1 (2/6)
(L' F2 B2 R') //Setup (4/10)
(F R2 F) //DR with super easy corners (3/13)
(B2 R' L2) //2e4e (3/16)

Skeleton: U2 F2 U R2 [1] B' L2 R B2 F' R2 F' R [2] B2 F2 L D
[1] = R2 L2 F2 R2 L2 B2 (6-3/19)
[2] = U D' R2 U' D B2 (6-2/23)

Optimal again, according to IF

I also had this DR in 11 with easy corners:
(D R' U2 L')
(F' U' D')
(B' D B)

But the best I could find off it was 7e in 17. I even had time to look for insertions, but there was nothing crazy.

3.
Scramble: R' U' F L2 F D2 U2 F L2 B' L2 D' F R2 U' B' D' L D2 L2 B2 F R' U' F
Solution: R' D B2 R U F2 U L2 U' F2 U2 F2 U F D' L2 D F U F' D' B U F2 D U' R2 (27)

Spoiler (Click to View)

Many promising starts on this one, but in the end I didn't find anything great.

R' D B2 R //EO + square (4/4)
U F2 L2 //Another square (3/7)
(D' B' D) //222 (3/10)
(F U' F' D') //Another square (4/14)
(L2 D F') //At this point I was trying to build more blocks, but I accidentally got a DR. The last 3 moves on normal are in the DR moveset, so this is actually DR in 14.

Rewrite:
R' D B2 R //EO (4/4)
(D' B' D F U' F' D' L2 D F') //DR (10/14)
U F2 U L2 U' F2 U2 F2 U //3e (9/23)

There were better ways to solve corners, but I didn't have much time to do multiple edge insertions.

Skeleton: R' D B2 R U F2 U L2 U' F2 U2 F2 U F D' L2 D F U F' D' B D *
* = D' U F2 D U' R2 (6-2/27)

27, 23, 27 = 25.67