If it helps, I’ve presented a couple of 50+ external attendee webinars in professional services during lockdown.
Open necked office shirt, carefully tidied spare room in background and well positioned webcam to hide the crap lurking in the corners.
Pre Covid I’d normally present suit and no tie except for a few more conservative events where a tie would be added.
I’ve done business meetings with partners of law firms and bankers in hoodies with their children walking through shot in the background. The world has changed. You probably do need to keep kids out and not go for a hoody.
Admittedly I’m not one of our firm’s sharpest dressers and I’m more relaxed than many. If you turned up to a video interview in a tie and jacket at the moment I’d think it a wee bit odd. I wouldn’t turn up in a Slayer t shirt either…
Of course it will depend on the industry and culture of your prospective employer. A look at the interviewers linked in profiles and pics might for you a clue on their style. I’ve softened mine from corporate look to more relaxed to reflect current styles.