- Maia chess (https://maiachess.com), the human-like chess engine based on neural networks,
- several of neural networks by Dietrich Kappe (https://github.com/dkappe/leela-chess-weights/releases),
- and handicapped Stockfish (https://stockfishchess.org).
The whole thing is at https://github.com/magv/bchess, and can be installed with just 'pip install bchess'.