Financial ETF

I've been looking through my portfolio and realized that I'm a bit thin in the financial sector.

Instead of focusing on one or two individual stocks, I came across these ETFs in a search as an addition to the MSCI or S&P500.

They don't look too bad in terms of performance.

Does that make sense? Or is this just another sector ETF?

$BNKE (-0,2 %)

$IUFS (-0,38 %)

$XDWF (-0,45 %)

Whereby I would like the $IUFS (-0,38 %) or the $XDWF (-0,45 %) as it includes Berkshire, although these are actually also included in the MSCI World or S&P 500, albeit with a higher weighting.

Or the $BNKE (-0,2 %) ? That would reduce my USA exposure somewhat.

Thanks for your feedback