RetroArch - Android - Certain Cores not Available to Download

I have been busy setting up my Android devices with emulators, but there is no option to download any PS2 emulator. The official documentation shows that there should be two... Play! and LRPS2, but neither show. It shows on my Windows PC but uses a .dll for the core. I was able to find the .so online for the LRPS2 core, manually installed it successfully, but that fails to load on Android. Is this expected. Are these cores no longer available or compatible on Android?