American Airlines Group, AAL 02376RAE2 US02376RAE27, rated B1 qualifies for this since their HY paper is held by HYG.
Probably a great time to write malware hack and steal money from these companies listed in IG and HY ETF's since they'll be made whole apparently now no matter what malfeasance they were up to before hand.
However, lets keep in mind that since the announcement on March 23, frbny via loans through blackrock has yet to buy any corporate bonds in the secondary market as of April 8th ("Loans" > "Secondary credit") : https://www.federalreserve.gov/releases/h41/current/