Search keyword 'los'
NavigateLA ( City of Los Angeles, ca) MapServer has 432+ layers.
Department of Public Work, Bureau of Engineering, GIS division maintain these 400+ layers
Official site is here
https://navigatela.lacity.org/navigatela/.
How to use offical navigateLA, youtube tutorial video is here : https://www.youtube.com/watch?v=7sOND8FnGWU
I only want to look LAPD related layer, now you can filter layer
https://transparentgov.net/json2tree/arcgis/js4tree/featurelayer_sublayer.html?layer_id=-99999&layer=NavigateLA&url=https%3A%2F%2Fmaps.lacity.org%2Farcgis%2Frest%2Fservices%2FMapping%2FNavigateLA%2FMapServer&_center_zoom=12&_center_lat=34.05869707922417&_center_long=-118.4021648129661&selectedItemIdArray=-99999&select_item_id=419&select_item_text=419+%26%23x21E2%3B+LAPD+Divisions%3Csup+style%3D%22font-size%3A8px%22%3Epolygon%3C%2Fsup%3E&select_item_type=layer
https://transparentgov.net/json2tree/esri/server2/folder.html?url=https%3A%2F%2Fmaps.lacity.org%2Farcgis%2Frest%2Fservices&org=Los+Angeles+CA+Public+Works+NavigateLA&_center_lat=34.049039&_center_long=-118.246521&_center_zoom=17&cross=default&timeout=3000&arcgis_online_token=&select_folder=2138&select_layer=
https://transparentgov.net/json2tree/arcgis/js4tree/featurelayer_sublayer_multi.html?layer_id=-99999&layer=NavigateLA&url=https%3A%2F%2Fmaps.lacity.org%2Farcgis%2Frest%2Fservices%2FMapping%2FNavigateLA%2FMapServer&_center_zoom=16&_center_lat=34.326229100057105&_center_long=-118.48800125427037&selectedItemIdArray=419
https://transparentgov.net/json2tree/arcgis/js4tree/featurelayer_sublayer_multi.html?layer_id=-99999&layer=NavigateLA&url=https%3A%2F%2Fmaps.lacity.org%2Farcgis%2Frest%2Fservices%2FMapping%2FNavigateLA%2FMapServer&_center_zoom=20&_center_lat=34.155115625502035&_center_long=-118.32145272607686&selectedItemIdArray=356
https://transparentgov.net/json2tree/esri/server2/folder.html?url=https%3A%2F%2Fmaps.lacity.org%2Farcgis%2Frest%2Fservices&org=Los+Angeles+CA+Public+Works+NavigateLA&_center_lat=34.049039&_center_long=-118.246521&_center_zoom=17&cross=default&timeout=3000&arcgis_online_token=&select_folder=19&select_layer=-1