KEYBOARD][4.0+] NextApp Keyboard: AOSP-derived Keyboard with Arrow, Function Keys | XDA Forums
OpenBoard (FOSS Android keyboard) : r/androidapps
Simple Keyboard is an actively developed, open source fork of the AOSP Keyboard for those looking for a less bloated, more responsive, basic keyboard with minimal permissions : r/Android
Android Keyboard (AOSP) for Android - Download the APK from Uptodown
Android Keyboard (AOSP) for Android - Download the APK from Uptodown