[chriscuber123]

1. with and without limit (27):

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F U' // square
(D2 R U2 F') // EO
B2 R2 U2 L' // 2x2x3
L' U2 L // F2L-1 missing a corner + pair
U R U' R' U R U2 R' U // L4C
skeleton: F U' B2 R2 U2 L2 U2 L * U R U' R' U R U2 R' U ^ F U2 R' D2
insert at *: L2 U R U' L2 U R' U'
insert at ^: U' B' U F2 U' B U F2
final solution: F U' B2 R2 U2 L2 U2 L' U R U' L2 R' U R U2 R' B' U F2 U' B U F' U2 R' D2 (27)

2. with and without limit (29):

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R' // pair
(F2 R' B) // square + another pair
(L2 U) // another square + another pair
L' U L2 U' // another square
(R L B R2 L') F2 // F2L-1
(R' D' R F' R F R') // L4C
skeleton: R' L' * U L2 U' F2 R F' R' F R' D R' L B' L' R' U' L2 B' ^ R F2
insert at *: R2 U L2 U' R2 U L2 U'
insert at ^: D R U' R' D' R U R'
final solution: R L' U L2 U' R2 F2 R F' R' F R' D R' L B' L' R' U' L2 B' D R U' R' D' R U F2 (29)

3. with and without limit (33):

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scramble: R' U' F R2 D U' L2 D' R2 B2 L2 R B2 F' U' L' B' L2 D L' D' U F R' U' F
inverse: F' U R F' U' D L D' L2 B L U F B2 R' L2 B2 R2 D L2 U D' R2 F' U R

U' // 2 pairs
B' D' F D' // 2x2x2
(B' F R' F') // 2x2x3
(B R2) // F2L-1 missing a corner
(B' U' B2 U B' U R' U' R B') // good L6C
skeleton: U' B' D' F D' * B R' U R U' B U' B2 U ^ B R2 B' F R F' B
insert at *: D' F' D B' D' F D B
insert at ^: U F U' B' U F' U' B
final solution: U' B' D' F D2 F' D B' D' F D B2 R' U R U' B U' B2 U2 F U' B' U F' U' B2 R2 B' F R F' B (33)

lucky insertions on first 2 on bad skeletons, 10 moves cancel on first and 9 on second, and on the last scramble all my starts gave terrible continuations lol
IF gives 32 optimal for last skeleton but with the first insertion canceling 1 and nesting an insertion canceling 4 :/