You are correct, but it means that when I make a visibility condition, those which do not meet the condition disappear from the collection list but leaves a gap in the grid because the Item is still in the list.
I want to apply the condition to the list which means that it’ll remove the gaps when conditions are applied.
After much headscratching I realised that @IVG was indeed correct and that the reason things weren’t showing up for me was because my broadband is soooooo slow that the images were not showing up in the time I waited for the changes to propagate through Webflow.