What are all the Pokemon that have a dual type that results in the Pokemon bearing no weaknesses of the original type?

Question

for example tinkaton is not weak to steel or poison so fairy/steel is there, what else?

Comments

Not a full answer, but
Normal and every type that resists fighting
Electric and every type that resists ground
Steel resists all of fighting's, dragon's, and fairy's weaknesses, and all of psychic's and ghost's weaknesses before gen 6.
Grass and dragon resist all of water's weaknesses.
Dark resists all of ghost's weaknesses.
Ghost resisted all of dark's weaknesses before gen 6.
Poison resists all of dark's weaknesses.

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I have no idea why this got down voted.

Answer 1

Here is a list of all the type combinations which fit your criteria:

Type combinations based on Normal:

• Normal/Poison
• Normal/Flying
• Normal/Psychic
• Normal/Bug
• Normal/Ghost
• Normal/Fairy

Type combinations based on Fire:

• None, sorry :(

Type combinations based on Water:

• Water/Grass
• Water/Dragon

Type combinations based on Electric:

• Electric/Grass
• Electric/Flying
• Electric/Bug

Type combinations based on Grass:

• None here either. :(

Type combinations based on Ice:

• Did you expect any to be here? Nope. None. :(

Type combinations based on Fighting:

• Fighting/Steel

Type combinations based on Poison:

• None here. :(

Type combinations based on Ground:

• None found. :(

Type combinations based on Flying:

• Not any here either. :(

Type combinations based on Psychic:

• None here, but Psychic/Steel does before Gen 6. :(

Type combinations based on Bug:

• None here. :(

Type combinations based on Rock:

• None here. :(

Type combinations based on Ghost:

• Ghost/Dark
• Ghost/Steel, before Gen 6

Type combinations based on Dragon:

• Dragon/Steel

Type combinations based on Dark:

• Dark/Poison
• Dark/Ghost, before Gen 6 and the Fairy type.

Type combinations based on Steel:

• Not here. :(

Type combinations based on Fairy:

• Fairy/Steel

So there you have it. Hope I helped.

Source: The Dual Type chart