#69 and #70 we like a lot however the colors may be a little too stark. Maybe we could see that design or a similar one with colors more like those used in #45. The font for the "Wayland" part of the logo also seems a little too "1985", maybe there is something else you could try?
#75 seems too much like a mustache to us, which doesn't really seem relevant, but it is still a nice looking logo for another application I'm sure!