OC, the most of the buyers represent well-known investors and real estate developers. For example, six DUMBO properties were sold to Kushner Companies, RFR Realty and Invesco Advisors, 25-30 Columbia Heights were purchased by Kushner Companies, CIM Group and LIVWRK Holdings, Vincent Viola was behind Eastern Division LLC, the buyer of 124 (aka 122&128) Columbia Heights, etc. etc. A reddittor have compiled media reports in a spreadsheet that is useful for research purposes, although it contains few errors.
Incognito, careful, according to the org's press release, 30 Front Street is "the last Brooklyn property listed for sale". I think this explains the contradiction.