Here's a link to Johann Georg Passchen's wrestling manual of 1659. Does number 5 look like kata mochi nikajo? Some sequential joint manipulation going on in 8 I think... http://www.thearma.org/Manuals/Passch...
Here are a few more illustrations, this time from an anonymous Swiss manuscript c.1500. Any of these look something like Aiki techniques? Reasonable kamai going on in the third one?