During WWDC 2020, Apple released a new version of its SF Symbols with more than 750 new icons for app designers and developers.

Mike Peterson for AppleInsider:
SF Symbols debuted at WWDC 2019 in the form of 1,500 vector-based and configurable icons for use in interface design. The symbols integrate with Apple’s San Francisco system font, can be used in AppKit and UIKit, and are available in Apple’s SF Symbols macOS app.
The new SF Symbols 2, which Apple detailed during its all-virtual developers conference, includes 750 new symbols for devices, health, transportation and more. They can be used across Apple’s platforms on iOS 14, macOS Big Sur and the company’s other 2020 software updates.
MacDailyNews Take: Have at ‘em! devs!
The leaf and the last icons are not readily understandable.
For me personally, 24 letters in the alphabet are too many. Do we really need the letter Q?
Then there would have never been a Jonny Quest!
Er, 26. I lose track that easily.