Lookup for the succeeding dates after the earliest date

Hello F,

welcome to the forum. Try this for "Second":

Formula:

{=IFERROR(SMALL(IF(A2=Sheet2!A:A,Sheet2!B:B,""),2),"")}

And this for "Third":

Formula:

{=IFERROR(SMALL(IF(A2=Sheet2!A:A,Sheet2!B:B,""),3),"")}

Let me know if it works.

Cheers