For instance, from your list, take the House Oversight committee investigations into White House Security Clearances and the 2020 Census Inclusion of Citizenship Question.
Apr 2, 2019 Press Release
Washington, D.C. (Apr. 2, 2019)—"Today, the Committee on Oversight and Reform voted to authorize Chairman Elijah E. Cummings to issue a subpoena for testimony to President Trump’s former White House Personnel Security Director and three additional subpoenas relating to the Trump Administration’s secret efforts to add a citizenship question to the 2020 Census. One Republican Committee Member voted in favor of the census-related subpoenas.
Cummings has now served all four subpoenas.
On four occasions—January 23, 2019, February 11, 2019, March 1, 2019, and March 18, 2019—the Committee requested a voluntary interview with Mr. Kline. Mr. Kline never responded, and the White House refused to make him available."
https://oversight.house.gov/news/press-releases/committee-approves-subpoenas-in-security-clearance-and-census-investigations
...AND this, for example:
Washington, D.C. (Apr. 27, 2019)—"Today, Rep. Elijah E. Cummings, the Chairman of the Committee on Oversight and Reform, sent a letter to former White House Personnel Security Director Carl Kline scheduling a transcribed interview for this coming Wednesday as part of the Committee’s investigation into White House security clearances. Kline failed to show up last week for a deposition pursuant to a subpoena issued by the Committee."
https://oversight.house.gov/news/press-releases/cummings-schedules-interview-with-white-house-security-director
Google is your friend!
(The House Intelligence Committee's investigation status details may be the exception to rule given they are dealing with classifed info and national security issues.) However, you can still find open source information re complying with requests/subpoenas, etc.
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