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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
From a quick glance at the code, they use three (Arial, Courier New, Tahoma). But yes, relying on a small set of fonts (which are present in every Windows installation) definitely simplifies making things look good.
You can see basic rasterizer here: https://github.com/10se1ucgo/rasterizer/blob/master/rasterizer/rasterizer.cpp#L142 for example. It looks complex, but again, there are no metric shitloads of code in there.
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