KvadrantLongList
fun <T> KvadrantLongList(groups: List<Pair<String, List<T>>>, modifier: Modifier = Modifier, onHeaderClick: () -> Unit? = null, cyrillic: FontFamily? = null, item: @Composable (T) -> Unit)
A list broken into groups, each under a letter — the contacts list, the app list, every long list the phone had.
The group header is in the accent colour at 22 sp SemiLight; that is in the theme dictionary, not a decoration added here. Tapping one opens the jump list.