Variables or dynamic value in display posts shortcode

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Hello
Two questions :

First, is it possible to insert a variable or dynamic value into the display posts shortcode ? It seems possible to include the author (with current word, I think, but I’m not sure). If yes, is it possible to know what are the variables we can use ?
If possible, how can we do that ? A shortcode into the shortcode? Something else ?

Thanks a lot for your help