Files imported from .enex don’t contain any styling.
I’ve just ignored it in plenty notes, fixed it manually in others, but I still have a few notebooks where neither of those options is feasible.
How it looks in EN:
And Joplin:
I guess I could try getting raw HTML from Evernote and hacking on that, but I really don’t want to, if there’s any other way.
(Update: I don’t care about stuff like the silly gray text; but the bold/italics and the paragraphs are important.)