Hi meetings1,
Thanks for the post. The Ionic SDK includes both iOS SDK and Android SDK, and both of them include support for device and simulator, as well as the support for 32-bit and 64-bit. If you are going to deploy only on certain platforms, such as Android, you may delete the library in libs/ios to reduce the size.
You may also configure the src/android/build.extras.gradle and add abiFilters to filter out certain CPU architecture, you may following the instruction here: App size estimate
Hope this helps. Thanks!