I have Yaiko's 2nd, 3rd and 4th albums (Candlize, i/flancy and Air/Cook/Sky). I also have a bonus disc with a live song with a very interactive audience. All three are quite good, but I'd say Candlize and Air/Cook/Sky are the best though i/flancy has a couple of good songs too. I might try to upload some of my favorite Candlize and Air/Cook/Sky songs later.
As for Oni, I have her third album 'Sugar high' and her first best album and might upload some of my favorite tracks off those.
Are the songs you listed above songs you already have, or songs you want?