There is a smattering of details on Sotomayor, usually in connection with the annual articles that come from the same sources about SCOTUS junkets. Here are some examples:
"Justice Sonia Sotomayor flew commercial when she gave the University of Rhode Island's commencement speech in 2016, but her roundtrip flights from Washington, D.C. to Providence, Rhode Island, still cost more than $1,0oo. Once in Providence, Sotomayor, her security detail and some of her family friends stayed in a bloc of between five and 11 hotel rooms at The Break, a boutique hotel in Narragansett that advertises rooms at about $200 $250 a night." Roll Call Legislative Journal March 24, 2020.
Sotomayor has reported law school teaching income in various years. Reuters June 17, 2020 (me- most Justices teach at law schools when SCOTUS if off term). Sotomayor also has the most investment income of all Judges per Reuters [most of those investments are in blind trust - me again as source].
There is an entire June 16, 2022 article from "Fix the Court" that takes Sotomajor to task for leaving out "six free or reimbursed excursions off her 2016 financial disclosure report, which she amendment last year but was only released to the public (i.e., us) today".
April 14, 2017 article on C-Span on an unreported visit to Stanford Law School (had to throw this in given the latest controversy at Furd).
There were some articles when Sotomayor was the sole dissent (8 to 1 vote) where SCOTUS ruled Congress can exclude residents of Puerto Rico from some federal disability benefits available to those who live in the 50 states,. Sotomayor's parents are from Puerto Rico, and she visits the island to see relatives, often on trips paid for by Puerto Rican businesses. E.G., CNN Politics April 20, 2022.
She spends a lot more time doing school speeches, but occasionally goes off on political issues, which you would think would disqualify from hearing cases on these issues (or do Justices have First Amendment rights?). her is an example.
https://www.cnn.com/2022/06/21/politics/sonia-sotomayor-conservative-supreme-court. This is essentially the same thing Ginsburg said, and Ginsburg had to apologize after conservative critics stated suggesting she disqualified herself from hearing certain cases.
On I assume the non-controversial side: Sonia Sotomayor disclosed more than $3.3 million in book payments since 2010reported earning $115,593 in book royalties from Penguin Random House last year, with whom she has released multiple children's books and her autobiography. Washington Post
Thomas clearly has other issues than Sotomayor, such as his wife may have created conflicts. But Sotomayor is not a perfect angel, and it is interesting how the mass media has not picked-up on certain things even when reported by more left leaning sources such s Fix the Court. That said, she has independent income and seems to take far less on the gravy trains than some other Justices such as Beyer and Thomas, who seem to be the worst in recent times. Sotomeyor probably gets mentioned by Fix the Court and other reform minded groups, just so they don't look like they are playing favorites. She may take advantage so perks, but she probably is the cleanest Justice, though again, Kagan and Roberts recently have chosen to back off on speaking engagements and junkets.