The seven accused men are: Chinese nationals Sun Jiao, 42, Zhang Qingqiao, 38, Chen Yiren, 42, Yan Peijian, 38, Huang Qin Zheng, 35, Liu Yuqi, 32, and Singaporean Goh Shi Yong, 34.
The three men who received fresh charges on Tuesday are Sun, Zhang and Chen.
Chen's new charge accuses him of receiving about S$11.6 million from a person known as "Biao Ge", which Chen spent on the rent, upkeep and expenses of an organised criminal group comprising Yan, Huang, Liu and Sun.
This allegedly includes funding for the Mount Sinai bungalow.
Of the S$11.6 million, Chen allegedly "expended" about S$399,000 over 11 occasions between 2022 and 2024, in a charge under the Organised Crime Act.
Zhang is newly accused of abetting two people - Lim Clovis Leslie and Lee Kok Leong - to obtain the personal information of unknown individuals on Jul 28, 2023.
Sun received two new charges. He is accused of sending a file containing the personal information of 1,055 unknown people from South Korea to a WhatsApp chat group on Aug 12, 2023, while he was in Singapore.