Default models for pipeline tasks

What are the default models used for the various pipeline tasks? I assume the “SummarizationPipeline” uses Bart-large-cnn or some variant of T5, but what about the other tasks?

|ConversationalPipeline|?|
|FeatureExtractionPipeline|?|
|FillMaskPipeline|?|
|QuestionAnsweringPipeline|?|
|SummarizationPipeline|BART or T5 (?)|
|TextClassificationPipeline|?|
|TextGenerationPipeline|?|
|TokenClassificationPipeline|?|
|TranslationPipeline|?|
|ZeroShotClassificationPipeline|?|
|Text2TextGenerationPipeline|?|

You can find all the defaults here:

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