I’ve got about 83% of my portfolio in $BHP Group Ltd (BHP.AU...

I’ve got about 83% of my portfolio in $BHP Group Ltd(BHP.AU)$ , the remainder is in $Rio Tinto Ltd(RIO.AU)$ , $CommBank(CBA.AU)$ (yes I’m aware of the overlap,) and $Fortescue Ltd(FMG.AU)$ .😚😚
I’m looking to put some cash which is on the sidelines into play, approx 10% of current portfolio value;

I’m pretty passive, just looking for something with a 10ish year timeframe.😏
I have another US portfolio which is 5x the size of my Aus, which is 80% $Vanguard S&P 500 ETF(VOO.US)$ with the remainder mostly mega tech, so not looking to add US equities.😝