https://cartography-playground.gitlab.io/playgrounds/data-classification-methods/
Generic version apply to any arcgis web service endpoint on earth
generic version
Browser side rendering
https://transparentgov.net/json2tree/arcgis/featurelayer/quantity_data.html?backgroundlayerurl=https%3A%2F%2Fgisportal.hrsa.gov%2Fserver%2Frest%2Fservices%2FMCHB%2FMCHB_MAP_MULTI_SEARCH_EXTERNAL%2FMapServer%2F0&layer=MULTI+CRITERIA+SEARCH+EXTERNAL&dynamicLabelField=nolabel&_center_lat=21.4353806167679&_center_long=-104.78798034917918&_center_zoom=5&panto=0&colorScale=colorScale_yellow&symbolType=quantity&quantityFieldName=BIRTH_RATE
Server side rendering
https://transparentgov.net/json2tree/datahub.io/usgs/quantity_image.html?backgroundlayerurl=https%3A%2F%2Fgisportal.hrsa.gov%2Fserver%2Frest%2Fservices%2FMCHB%2FMCHB_MAP_MULTI_SEARCH_EXTERNAL%2FMapServer%2F0&_center_zoom=5&_center_lat=4.435178209424051&_center_long=-82.77319833046874&symbolType=quantity&layer=MULTI+CRITERIA+SEARCH+EXTERNAL&dynamicLabelField=nolabel&colorScale=colorScale_teal&quantityFieldName=IMR_SMTH
Official web site
https://data.hrsa.gov/maps/mchb/
All above web apps all use single web service end point
https://transparentgov.net/json2tree/esri/server/folder.html?org=https%3A%2F%2Fgisportal.hrsa.gov%2Fserver%2Frest%2Fservices&url=https%3A%2F%2Fgisportal.hrsa.gov%2Fserver%2Frest%2Fservices&select_folder=56&select_layer=0