Trying to understand display specs of macbook pro I want to buy a monitor to connect to my macbook pro. From apple's website this is what I have gathered:

Retina display
15.4-inch (diagonal) LED-backlit display with IPS technology; 2880-by-1800 native resolution at 220 pixels per inch with support for
millions of colors
Supported scaled resolutions:
1920 by 1200
1680 by 1050
1280 by 800
1024 by 640
500 nits brightness
Wide color (P3)
True Tone technology

Video Support:

Simultaneously supports full native resolution on the built-in display
at millions of colors and:
Up to two displays with 5120-by-2880
resolution at 60Hz at over a billion colors
Up to four displays with
4096-by-2304 resolution at 60Hz at over a billion colors
Thunderbolt 3
digital video output
Native DisplayPort output over USB‑C VGA, HDMI,
DVI, and
Thunderbolt 2 output supported using adapters (sold
separately)

Questions:
Most monitors I can find online in my preferred price range support 1920x1080 resolution. Will they work with macbook pro as I cannot find 1920x1080 in the supported resolutions above?
Referring to &quot;Up to two displays with 5120-by-2880&quot; - does it mean each monitor has 5120x2880 resolution? That seems awfully large and I cannot find any monitor with so much resolution.
What would be a middle-of-the-road recommended resolution to buy? Thanks
1.Will they work with macbook pro as I cannot find 1920x1080 in the supported resolutions above?

Yes,they would work just fine.But only with resolution of 1920*1080 or below.

2.Referring to "Up to two displays with 5120-by-2880" - does it mean each monitor has 5120x2880 resolution? 

You could output 5120*2880,but the monitor may not support it.

3.What would be a middle-of-the-road recommended resolution to buy? 

To use an external display from a MacBook Pro ,I would only recommend displays with a resolution of 4K or 5K.

One thing you have to know about MacBook and external display is the output is blurry due to the font used by OS X,and the only solution to this is high resolution in much smaller display, or HiDPI.