I still strongly suspect that the Imperials would probably find the highpoint of Earthican culture to be various Oulipo projects.
…even if mostly in the sense of “hey, look, those folks can actually write good, sometimes”.
(I planned to post about that on Things Eldrae Might Appreciate but apparently somehow never got around to it - admittedly partly because my comment about it it kinda devolved into an extensive astronomy tangent and then I never really quite finished either part [and since then I’ve forgotten what the astronomy tangent was].)