Handing out credit costs you nothing and buys you a team that shows up next time.

Credit is not a fixed quantity that shrinks when you share it. Saying who did what makes you look more reliable rather than less, because people trust somebody who keeps an accurate account. The ones you named remember it and volunteer the next time you need something, which is the actual return.

Name people specifically when you report on anything this week, in front of whoever matters. Not the whole group, the individual, and what exactly they did. Do it while they are out of the room and it will still reach them.