Tracking income and invoices for projects - multiple search results

All the amounts can be taken from the 'Total Invoice Cost' heading, but they are entered below the initials of the supplier (E.g. DM, HF, etc) I have attached an image of what I mean.

For example, for the amount of $60.87, i would need the extra results column to display 'GN'. then if the results were showing the amount of $5.39, I would need it to display 'HF'.

Does this explain it a little better? Sorry if I did not make it clear.

Thanks again.

Woops. Didnt attach.