When choosing the non-default BTC mempool on Johoe's site, the hover table strangely shows a wrong "total".
Though not a big deal. Just need to mind instead the "1+" line above it.
Non-default mempool doesn't strictly enforce standardness in terms of the minimum mempool fees, the disparity arises with the fact that the graph doesn't show transactions that pays a fee of 0 - 1 satoshi. It doesn't matter because the default puts it at 1 sat/vbyte and is also what most miners enforce as well.