ViewThatFits.swift

struct ContentView: View {
    let data = (1...10000).map { "Item \($0)" }

    let columns = [
        GridItem(.flexible()),
        GridItem(.flexible()),
        GridItem(.flexible())
    ]

    var body: some View {
        ScrollView {
            LazyVGrid(columns: columns, spacing: 20) {
                ForEach(data, id: \.self) { item in
                    ViewThatFits {
                        ZStack {
                            Rectangle()
                                .foregroundStyle(.blue)
                            Text(item)
                                .foregroundStyle(.white)
                        }
                        EmptyView()
                    }
                }
            }
            .padding(.horizontal)
        }
    }
}