I'm based in the UK. This is my dashboard to keep an eye on in the run up to the US open. It includes NDQ, SPX & DJI futures (white line = current contract, blue line = contract in front), US Treasury 2/10 and 3m/10 yield curves, DXY, BTC and UK100 index.
On the US index charts I've overlayed spot candle charts to see the difference between spot prices vs futures.
Initially I had 2 layouts, one for futures/pre market and another with spot/open market. However, having tried using both in line and candle formats on the same layout, I'm finding this is suitable for pre and open hours. I frequently switch between hourly or daily, but during pre market hours in the run up to open, it's always the hourly chart, zoomed so that the full previous day's trading hours are visible.