Just did a quick search on Angular components for either Google Maps or OpenStreetMap. For Google Maps the choice du jour seems to be Angular Google Maps (Git repo). A neat little blog post on how to get started is here.
When targeting OpenStreetMap, Leaflet.js is still the most popular library out there. While it is "just" a JavaScript library, you can use it directly in your Angular project or use dedicated components, of which the following 2 seem worthwhile to investigate further:
