The Harmonious Tarot makes me thing of the aughts of a century ago, as does the Waite Smith come to think of it. Simple lines and a sort of sentimental looking back like the vibe of the current decade.
The Aquarian is packed with the commercialized me-generation Art Nouveau pastiche of the mid 1970s. The deepest 80s deck I can think of is the Myers Art Nouveau. The 90s are the stumbling block for me, I think because we're too close to have detachment. For the 90s, I think of the explosion of the WWW and the One World stripmall McMonoculture. I'd probably pick all of the soft focus angel decks and multi-culti Shamanism-in-a-can decks that reimagined entire aboriginal cultures as anglos with dark spiral perms.