That's a great summary, not sure I have much to add to it.
A few sellers have started stocking knots which look very similar to the ones used in the Omega EVO series, and some have stated they think those fibres are close to the ones used in the EVO series.
From personal experience, I own a few different types of Yaqis knots/fibres and they all perform really well, and I think the type of fibre doesn't make as much difference in building a lather as the size of knot/loft, the glue bump and the density of the fibres.
I'm fairly sure Yaqi produce OEM knots/handles for a few others, but they seem to have better QC than buying from Yaqi direct, who occasionally send a stinker or two but I've always had replacements sent out quickly without any fuss.
The EVO fibre is probably at the front of the pack at the moment, the way it retains water is uncanny; it would be great if it becomes more widely used. Be interesting to see how synthetic fibres develop in the future...