These are Google's likely watchfaces on 'Pixel Watch' - 9to5Google
Amazon.com: GRV Smart Watch Compatible with iPhone and Android Phones IP68 Waterproof, Round Watch for Men Women Smartwatch Fitness Tracker Heart Rate Monitor Digital Watch with Personalized Watch Faces (Pink) : Electronics
Facer - Thousands of FREE watch faces for Apple Watch, Samsung Gear S3, Huawei Watch, and more