Arkarya

Name of the clade of archaea plus eukarya proposed at: www.frontiersin.org/articles/10.3389/fmicb.2015.00717/full. Much better term than prokaryote as that is not a clade. Let's hope it catches on!

Archaea are much more closely related to the eukaryotes than bacteria, see e.g. Figure "Coral of life by János Podani (2019)" which shows how archaea diverged from eukarya almost 2 By after LUCA!

It therefore appears that the mitochondrial endosymbiosis happened when a bacteria like cell joined up with an archaea.

Some notable points in which archaea look more like eukaryotes than bacteria: