Samsung Camera 7.6.76 seems to be compatible with "My Stickers" or, AR Emoji. Can't seem to install the APK. I'm on the August Security Patch - Exynos. : r/GalaxyNote8
Samsung SMART CAMERA App 1.4.0_180703 APK Download by Samsung Electronics Co., Ltd. - APKMirror
Samsung My Camera 6.0.24 (Android 7.0+) APK Download by Samsung Electronics Co., Ltd. - APKMirror