Anyone can link me to a reliable site that shows the median, cheapest high priority fee (not just the median fee or sats/vByte), ideally in BTC and in USD? I can't see such option in the links posted above.
The
https://mempool.space/ has been doing a pretty good job with a simple understandable UI. It has the values in both satoshi and dollar.
There is also
https://jochen-hoenicke.de/queue/#BTC,24h,weight which is a very old tool to visualize the mempool and see the total size for each fee level. But it is not the most user friendly.
And of course there are wallets such as Electrum that also do a pretty good job at giving the user a good fee estimation.