I vote for some Roman blinds in a nice print or stripe. Something that will embrace all the colors you're bringing in. You may want to check out Etsy. When we were doing our bathroom upstairs, I wanted something different for the window and found a woman there who made valances. Her workmanship was fabulous and I was really happy with the transaction. My favorite thing about it is it's more unique so every other house in the area doesn't have the same thing. A lot of the sellers have pricing that's reasonable too and the choices are unlimited. Here is a link that might be useful: custom made Roman Shades

Yes one long curtain rod. Would you be open to doing a crown molding/valance type thing there to cover up the rod. I think that would look nice. Or maybe a pinch pleat type curtain

I’m a bit challenged trying to visualize this room as a whole. I think that how much use for going in/out the sliders needs to be factored in. The front slider next to the window is the most challenging IMO since there’s no room for any window covering to stack completely off the glass on the fixed panel side of slider. I agree the same fabric & treatment should be used for all windows. I think I would hang separate drapery panels over each window. For the front slider & window I’d use the same length panels for both slider & window for a better look when closed. That slider - I’d have drapes that open in middle & pull to each side. The corner fixed panel will always be partially covered with the open panel on left. The drape for panel that slides should stack completely off the glass so that door handle can be easily accessed. The window would be traditional drape open in middle & stack completely back off glass on both sides. Two rods for each window - sheers on inside rod & drapes on outside so the 2 coverings can be open closed separately. When closed, this wall would appear as a complete wall of drapes. As for color - don’t know if you’re wanting dark blue or thinking that’s room darkening. Room darkening drapes are available in many colors. Slider in dressing area should have same treatment but sounds like with 16” space on each side the drapes can stack completely off the slider on each side. Whether that slider has sheers or not depends on the privacy issue. Maybe only drapes on that one - no sheers.

I think one of the problems is that many new houses are designed as if privacy and light control are of absolutely no concern whatsoever, like every house is sited privately on large acreage with perfect position to the sun and with no problems of nighttime light pollution at all. You may well have the budget to properly dress all these windows, I don't want to assume anything but that could be in the $10Ks--don't think I am exaggerating, I know someone who spent $100,000 on window treatments-- but the problem is most people do Not budget for this and that's why so many houses end up with little better than a sheet over the window. There are multi-million dollar houses around me (in the middle of a city, no privacy and light pollution enough that you can read with the lights out at night in some places), with gigantic plate glass windows covered 24 hours a day with cheap accordion shades or limp looking pieces of cloth from Target. A million-dollar house deserves better, and sometimes that means planning in the architectural drafting stage, and the budget stage. I am not singling you out OP, it's just a general comment about a common thing I see in these forums. "I just built a very expensive house. My budget for window shades is Walmart."