OK, this challenge is similar to the "skills you can't live without" thread, with one slightly more difficult twist: You are now trying to save 100% (or if that is not possible, the maximum percentage known to be attainable).
The maximum number of lemmings saved, if not 100%, is indicated after each level.
Original Lemmings
Fun
1: 1 digger
2: 10 floaters
3: 3 blockers (47/50)
4: 10 climbers, 1 miner
5: 3 bashers
6: 2 bombers (48/50)
7: 2 builders
8: none
9: none
10: none
11: none
12: none
13: 3 diggers
14: none
15: 2 builders
16: 4 builders
17: none
18: 5 bombers (65/70)
19: 2 builders
20: 1 builder
21: none
22: none
23: none
24: none
25: none
26: none
27: 1 builder
28: 5 builders
29: none
30: none
Tricky
1: 1 builder
2: 5 diggers
3: 1 builder
4: 5 builder
5: 3 builders
6: 2 builders
7: 7 builders
8: 15 builders
9: none
10: 4 builders
11: none
12: 2 floaters
13: 3 builders
14: 5 builders
15: 3 bombers (7/10)
16: 4 bombers, 1 basher, 1 miner (46/50)
17: 2 bombers (48/50)
18: 1 digger (9/10)
19: 1 climber, 1 builder
20: none
21: 3 builders
22: 8 builders
23: 9 climbers, 10 floaters, 1 builder, 2 bashers, 1 miner, 1 digger (79/80)
24: 1 blocker, 2 builders
25: 8 builders, 1 digger
26: none
27: 2 builders
28: 1 builder
29: none
30: 2 miners
Taxing
1: 6 builders, 1 basher
2: 1 builder
3: 6 builders
4: 8 builders
5: 5 builders, 1 basher
6: 3 bashers, 1 digger
7: 1 climber, 1 bomber, 5 builders, 1 basher (79/80)
8: 3 builders, 3 bashers
9: none
10: 2 builders
11: 7 builders
12: 2 builders
13: 1 builder, 2 bashers, 2 miners
14: 17 builders
15: none
16: 1 floater, 16 builders
17: 1 builder
18: 10 builders
19: 5 bombers (65/70)
20: none
21: none
22: 1 builder
23: 15 builders
24: 6 builders
25: 5 builders, 1 basher
26: 5 builders
27: 1 blocker, 7 builders (77/80)
28: 1 climber, 1 floater, 1 bomber, 1 blocker, 8 builders, 3 bashers, 1 miner (70/80)
29: 1 builder
30: 7 diggers
Mayhem
1: 1 floater, 23 builders
2: 15 builders
3: 1 builder, 1 miner, 1 digger
4: 4 bashers
5: 4 blockers, 5 builders, 1 digger (76/80)
6: 6 builders
7: 5 builders, 3 bashers, 3 diggers
8: 3 builders, 1 digger
9: 6 builders, 2 bashers
10: 3 floaters, 1 blocker, 17 builders, 3 bashers, 1 digger (73/75)
11: 9 diggers
12: 1 builder
13: 1 builder
14: 16 builders
15: 4 builders
16: 1 basher, 1 digger
17: 2 builders
18: 13 builders
19: 1 climber, 2 bombers, 18 builders (48/50)
20: 2 climbers, 1 blocker, 1 builder, 1 basher, 2 miners
21: 21 floaters, 3 builders, 1 basher, 1 digger
22: 6 builders
23: 10 builders, 1 basher
24: 3 bashers
25: 7 builders
26: 3 bombers, 1 blocker, 11 builders (76/80)
27: 2 bashers, 1 digger
28: 5 builders, 1 basher
29: 5 blockers, 12 builders, 1 basher, 2 diggers (78/80)
30: 10 builders
Oh No! More Lemmings
Tame
13: 1 builder
All others: none
Crazy
1: 3 blockers, 4 diggers
2: 3 builders, 1 digger
3: 2 bombers (48/50)
4: 4 builders
5: 7 builders
6: 1 climber, 5 builders, 2 diggers
7: 1 climber, 1 floater, 3 builders, 1 basher
8: 4 builders, 2 bashers
9: none
10: 7 builders, 1 basher (79/80)
11: 1 builder (40/80)
12: 2 builders, 3 bashers
13: 1 builder, 2 miners, 1 digger
14: 2 blockers, 4 builders, 2 bashers, 1 digger (48/50)
15: 3 builders, 1 digger
16: 1 builder
17: 1 blocker, 4 builders, 2 bashers, 2 diggers
18: 4 builders, 1 basher, 1 miner
19: 5 builders, 1 basher, 1 digger
20: 10 builders, 1 basher
Wild
1: 1 builder, 1 miner
2: 5 builders
3: 6 builders
4: 6 builders, 1 basher
5: 2 bombers, 3 blockers, 4 builders (77/80)
6: 1 builder
7: 3 builders, 2 bashers
8: 10 climbers, 10 floaters, 1 builder
9: none
10: 4 builders, 1 basher, 2 diggers
11: 4 builders
12: 7 builders, 3 bashers
13: 2 climbers, 2 bombers, 2 builders, 2 bashers, 1 miner (77/80)
14: 3 builders, 1 basher, 1 miner, 1 digger
15: 1 bomber, 3 blockers, 2 builders, 3 bashers, 1 digger (48/50)
16: 1 climber, 4 builders
17: 2 builders
18: 2 bombers, 10 builders (78/80)
19: 7 builders, 2 bashers
20: 3 builders, 1 digger
Wicked
1: 1 bomber, 1 basher, 1 miner, 1 digger (59/60)
2: 5 builders, 1 miner, 5 diggers
3: 3 builders
4: 1 climber, 1 bomber, 15 builders, 1 basher (49/50)
5: 1 builder, 1 basher, 1 digger
6: 8 builders, 4 miners
7: 4 bombers, 2 blockers (76/80)
8: 1 climber, 4 bombers, 1 builder (46/50)
9: 1 floater, 20 builders
10: 1 floater, 1 blocker, 9 builders, 1 digger (49/50)
11: 5 builders, 1 basher, 1 miner
12: 1 bomber, 2 blockers, 7 builders, 1 miner (79/80)
13: 9 builders
14: 1 miner
15: 1 floater, 8 builders, 1 miner (48/50)
16: 1 bomber, 1 builder (5/6)
17: 6 builders
18: 5 builders
19: 6 builders, 2 bashers
20: 1 blocker, 6 builders, 1 digger
Havoc
1: 6 builders
2: 1 climber, 1 floater, 11 builders, 2 diggers
3: 1 builder, 1 basher
4: 1 builder, 1 basher
5: 2 climbers, 2 bashers, 2 miners
6: 1 miner
7: 1 climber, 9 builders, 2 bashers, 1 miner, 1 digger
8: 1 climber, 4 builders, 4 miners, 1 digger
9: 13 climbers, 5 builders, 3 miners
10: 2 climbers, 2 floaters, 2 bombers, 1 builder, 2 miners, 2 diggers (17/21)
11: 8 builders
12: 9 builders
13: 9 builders, 1 basher, 1 miner
14: 1 climber, 4 builders, 4 bashers, 2 diggers
15: 13 builders, 1 basher, 1 digger
16: 1 climber, 8 builders, 2 miners
17: 1 blocker, 7 builders, 1 basher, 1 miner, 1 digger
18: 9 builders, 1 basher, 2 diggers
19: 2 builders, 1 basher
20: 1 climber, 1 floater, 7 bombers, 2 miners (53/60)
Christmas Lemmings
Xmas 91 (first two levels only)
1: 2 builders
2: 3 builders
Xmas 92
1: 1 basher
2: 1 digger
3: 7 builders
4: 1 climber, 9 builders, 3 diggers
Flurry
1-7: none
8: 5 builders, 1 basher
9: none
10: 3 builders
11-12: none
13: 2 builders
14: 1 builder
15: 1 builder
16: 3 builders, 2 bashers (49/50)
Blizzard
1: 3 builders
2: 9 builders
3: 1 digger
4: 1 basher, 1 builder
5: 7 builders
6: none
7: 5 builders, 1 basher
8: 2 builders, 1 basher
9: 11 builders
10: 2 builders
11: 8 builders
12: 1 bomber, 1 digger (79/80)
13: 8 builders
14: none
15: 11 climbers, 3 floaters, 1 bomber, 1 basher (10/15)
16: 1 bomber, 1 builder, 1 basher (48/50)
Frost
1: none
2: none
3: none
4: 1 builder
5: none
6: 1 blocker, 4 builders (69/70)
7: 8 builders
8: none
9: 2 builders
10: 1 builder, 1 basher, 2 diggers
11: 1 builder
12: 3 builders, 2 bashers, 1 digger
13: 1 builder
14: 4 builders, 3 bashers (45/50)
15: 1 builder, 3 bashers
16: 1 floater, 4 builders
Hail
1: 1 climber, 1 floater, 2 builders, 1 basher
2: 4 bombers (76/80)
3: 10 builders
4: 1 builder
5: 8 floaters, 1 blocker, 9 builders, 1 digger
6: none (46/80)
7: 14 builders
8: 5 builders, 1 basher
9: 9 builders, 1 basher
10: 2 builders
11: 3 builders, 2 miners, 1 digger
12: 6 builders
13: 1 builder, 2 bashers, 2 diggers
14: 10 builders
15: 1 basher, 1 digger
16: 10 floaters, 1 builder