Sotomayor owns shares of a BlackRock investment fund (MDLOX), which itself is boring AF and invests in domestic and foreign bonds and it looks like large cap global companies. Her whole portfolio is deeply boring and looks like someone wealthy enough to just park their money in safe dividend-earning instruments and broad-market ETFs along with having one rental property. There's actually nothing to see there, although the substring search for "BlackRock" will cause some 20 year olds who don't understand investment to freak out on reddit.

(I just wildly guessed that you were making insinuations about Sotomayor and haven't checked the other ones out)

Kavanaugh only lists 2 investments (highly suspect), while Amy Coney Barrett lists 136 (8 pages!!!) of investments, including Black Rock Strategic Income Opportunities.