A public thank-you can miss someone while sounding generously complete.

A list that sounds complete is more painful to be left off than a short one. When thanks are given warmly and at length, the omission reads as a judgement rather than an oversight, and the person left out has no way to raise it without appearing to beg. The speaker almost never notices. They finish feeling generous, which is precisely what makes the gap invisible from where they stand.

Before you thank people publicly, check the list against who actually did the work rather than who is in the room. If you were the one missed, a quiet private word later is fair.