Excel - Fill column in list based on criteria

Hello,

I am trying to fill a column in a list, based on criteria.
Example:

In Table 1, I configure the criteria:
If string contais "aaa" OR "bbb" OR "ccc" then "A"
If string contais "xxx" OR "yyy" OR "zzz" then "B"
...

In Table 2, I want to fill column B, based on the value of column A - looking for the right value in table 1

How can I do that?
I tried vlookup & match, but I would like to add criteria to Table 1 when needed.

Thank you very much