Combining a custom data validation and a list validation

Need some help with combining a custom data validation and a list validation in the same cell.

Information in cell B2 can't be entered until cell A2 is entered. This continues thru cell F2. I am using this formula:

=NOT(ISBLANK(A2))

Information in G2 can't be entered until F2 is entered and the input can only be Yes or No. I tried this formula in G2, but only half of it worked:

=AND(ISBLANK(F2),OR(G2="Yes",G2="No"))

Information in H2 can't be entered until G2 is entered and the input can only be 1,2,3,4,Safe or HR.

I have attached what I am working on.

Thanks for helping.

The strategy is to create your lists on another sheet. One of those lists is just a blank cell. Then have an IF condition to determine whether your dropdown displays the blank cell or the desired list. See attached. I just did G & H in row 2, you can fill down.

My pleasure and thanks for the rep!