As of January 9, 2018, Google Fonts had 848 font families, 183 of which are display faces. Of those, the following 20 can handle Hanyu Pinyin with tone marks.
- Arima Madurai
- Baloo (Note: The various Baloo fonts all look the same for Latin letters; they differ only in which Indian script they also cover.)
- Baloo Bhai
- Baloo Bhaijaan
- Baloo Bhaina
- Baloo Chettan
- Baloo Da
- Baloo Paaji
- Baloo Tamma
- Baloo Tammudu
- Baloo Thambi
- Bungee
- Bungee Hairline
- Bungee Inline
- Bungee Outline
- Bungee Shade
- Chonburi
- Farsan
- Lalezar
- Lobster
Hey, did you notice today’s doodle?
https://www.google.com/doodles/zhou-youguangs-112th-birthday
Wow! Great!