The sole member of the Equinox crew seen again on screen was Brian Sofin. He makes a brief appearance as a background character in the Voyager episode "Repentance", evidently working as a junior security officer.
The other characters seen being given a dressing down by Janeway simply disappear from view, presumably working below decks or as ordinary crewmen with limited responsibilities and no good reason to be near the ship's main staff.
JANEWAY: The last time we welcomed you aboard, you took advantage of our trust. You betrayed this crew. I won't make that mistake again.
Noah Lessing, Marla Gilmore, James Morrow, Brian Sofin, Angelo
Tassoni, you are hereby stripped of rank. You'll be expected to serve
as crewmen on this vessel. Your privileges will be limited, and you'll
serve under close supervision for as long as I deem fit.
Memory Alpha notes that Marla Gilmore and Noah Lessing are mentioned in the Voyager novel Homecoming as being part of the returning crew.
She paused, giving herself and her crew a moment to reflect on the
sacrifices some of their number had made. The losses still ached. If
she were honest with herself, she’d have to admit, it would have
been impossible to get every single crewman home while battling such
odds. But oh, how she had wanted to. Her eyes found Icheb and little
Naomi, Gilmore and Lessing from the Equinox. She smiled, heartened by
the sight of their faces.
The others, James Morrow and Angelo Tasso are never heard from again, potentially killed in the interim or simply too unimportant to mention.