I recently watched a jiujitsu class, in a small system with only five dojos in total. I was almost chocked to see that the techniques were even called ikkyo and sankyo - they were simply doing aikido without high falls wearing coloured belts (which nobody does around here) claiming that "aikido is a art for personal growth and harmony with the universe, we are doing self defence". I can imagine one or two aikido teachers not agreing with their view on what aikido is, but who cares. Based on the techiniques it was most definately aikido, but they call it jiujitsu, which is a namn that no lineage has exclusive right to... well okay. Then it isn't aikido, I guess. They probably had some judo mixed in with that aikido-so-called-jiujitsu, too.
There is also Aiki-jujitsu. Many styles/ryus of it though . In fact, O'Sensei had his background in Daitoryu Aiki-jujitsu (School of The Big East).