Could someone explain a few of the Investment options for Aussie Super?

Disclaimer for mods: I’m not asking for personal financial advice, simply general outlines for some of the options on offer to potentially assist people such as myself in making informed decisions.

I’m a 19 year old bloke with a decent bit in my superannuation account, some of the options however I don’t fully understand so if anyone would be willing to share a quick explanation that’d be very highly appreciated.

These being: Indexed Diversified, Diversified Fixed Interest, and Cash.