How many simpsons halloween episodes are remakes from the twilight zone

The talking Tina doll/clown without pity

The stopwatch that halts time.

Little girl lost (who walks through a wall into another dimension)/homer in 3D

The episode where the gremlin attacks the school bus

To serve man

Bart has mental powers and can create reality at will.

The little people/lisa’s tooth

I’m sorry no one jumped in on this question, but many of those are based on older tropes. With Wikipedia giving the plot for episodes of both those shows, the correlation could be written out … and then Tropes will let you know, the provenance is actually different. At least TV Tropes allows you to close out Anime/Manga, in which case, everything from Shakespeare to the Bible has been done as an anime or manga, first, in the mid-1980’s

  • The talking Tina doll/clown without pity

Actually an ABC movie of the week about a Zumbi doll, as related by Cracked.com, assuming it wasn’t purged.
*
The stopwatch that halts time.*

The Girl, the Gold Watch, and Everything. Pam Dawber strips in silhouette. Yikes, I was 12, may have lost consciousness for a minute.

*Little girl lost (who walks through a wall into another dimension)/homer in 3D

The episode where the gremlin attacks the school bus

To serve man

Bart has mental powers and can create reality at will.*

You got those correct.

The little people/lisa’s tooth

Simpsons did it. I mean, South Park did it. I mean, Star Trek Voyager. I mean, Dragon’s egg. https://en.wikipedia.org/wiki/Dragon’s_Egg

I’ve Grown a Costume on Your Face

Actually both:

I mean, Theodore Sturgeon.
And of course the Bart story is from It’s A Good Life by Jerome Bixby.