[porkynator]

1. R' U' F L2 D' R2 U F2 L2 U R2 F' U' R D' R2 D B' U2 R' B' L B R' U' F
Solution: D F B U' R F R B' R' F' R B2 U2 B2 U' L' D L U2 L' D2 U2 R F2 L' B L B' F2 (29)

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D F //Pseudo blocks + partial EO (2/2)
(R' U2) //Square + pair (2/4)
B U' R2 //Pseudo 2x2x2 (3/7)
(D L) //2x2x3 (2/9)
(U' B2 U2 B') //4c3e (4/13)
F' L' B L B' F //5c (6/19)
 
Skeleton:
D F B U' R2 * B U2 B2 U + L' D' U2 R F' L' B L B' F

+ = U2 L' D L U2 L' D' L (4)
* = R' F R B' R' F' R B (6)

2. R' U' F D2 B F U2 R2 D2 L2 F' D2 U2 L D2 F D2 B' D' F2 R D B' D R' U' F
Solution: R' L U D' F B D2 B' D2 B' R2 L2 F U2 F2 D' F2 D2 F' D2 F' R F R' U B L' U' R F'

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Corners First didn't pay off this time
* L2 //BLocks (skew centers) (1/1)
(F' R' U L F' @) //3x2x1 + some edges (5/6)
D2 L + U' L //Pseudo F2L -1 edge (4/10)
L U2 L' U2 L' B L B' D //5e skew centers (8/18)

@ = F B' //changes from 5-cycle to 2-cycle + 3-cycle)
* = S //Leaves two 2-cycles
+ = L2 D2 L' S2 L D2 L2 //solves edges

All but 6 centers:
F' B ^ D2 R2 D' R2 D' F2 B2 U L2 U2 R' U2 R2 U' R2 U' B U B' L D F' L' B U'

^ = S' E' S E (3)

I have played with this skeleton for a long time, but I think I could only improve it to a 29, so whatever.

3. R' U' F U2 F2 D2 L2 U R2 B2 L' U' F' R U' R U2 R' F2 D' L U2 R' U' F
Solution: R' U B' F2 L2 F2 L F' L' B2 L F' U' L2 R' D R D' L' D L D L' D' L (25)

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Easy scramble. Skeleton found in like 6 minutes + lucky insertion.

R' U B' //EO (3/3)
F2 L2 F2 //2 squares (3/6)
* B2 L F2 //Another square (3/9)
U' L2 //cool stuff (2/11)
% R' D R +
D' L' D L D L' D' L //3c (11/22)

* = L F' L' B2 L F L' B2 (3)

Bonus: a nice but unlucky (for insertions) skeleton with a funny alternative insertion.
R' U B' * F2 L2 F2 B2 * L $ F2 U' L2
F2 U L U' F2 //3c flip in 16

Standard double comm insertion gives 28. But I also got a 28 like this:

$ = U' F' U F' U' F2 U F2 //Sune, leaves 3e in 20
* = S2 (in both places) //6e in 17

skeleton:
R' U B R2 L + U' F' U F' U' F2 L2 F2 U L U' F2 #
+ = L2 $ U' D F2 U D' //4e in 20
# = [F' D': M2] //all but 4 centers in 25
$ = M' E2 M E2 //centers

29, 30, 25 = 28.00

Another bonus for solve 3:

Spoiler (Click to View)

Skeleton by Tommaso Raposio (he is posting later I think) and insertions by me.
R' U B' //EO 3/3
L F2 L2 B2 L U' //322+pairs 6/9
(L F2 L' F2) //3e3c 4/13

Skeleton: R' U B' L [1] F2 L2 B2 L U' F2 L F2 [2] [3] L'
[1] = M2 //From 3 edges to 4 edges (yes, that's actually better) (1)
[2] = U M2 U' //Solve edges (4)
[3] = U L D' L' U' L D L' //Corners (4)

IF with "pure insertions" only gives 26, Tommaso (and IF with "other") found a 23.