you're right, there are many more! in the OP, the title clarifies - these are just the ship owners recorded as having financed the most slaving voyages in a narrow 23-year window. any record of all slaving voyages based out of a rhode island port, either for that time period or since the beginning of european colonization, would have a lot more names, even if it was still limited to ship owners.

i remember reading somewhere that the brown who the school is named after didn't invest in that many (🙄) slaving journeys himself - others involved with the school did more - but would have to loke around for more details. i can if you want