I used this to raise the monitor very high on a regular mount (over an open laptop). It worked great. It was a dual monitor mount with both arms at the same height. Not only did this allow me to elevate one monitor above my laptop, it also allowed me to keep the other monitor low.
23.8" Monitor Xiaomi Redmi Display 1A, 1920x1080, 60Hz, IPS, CN, black
65 Review
ONKRON D101FS monitor mount 13"-34" desktop, up to 8 kg, tilt, swivel, black
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Mount ONKRON G160 for two monitors 13"-32" desktop, 2 x 8 kg, gas lift, black
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Wall bracket ONKRON SN14 for TV 32"-65", inclined, up to 68 kg, black
34 Review