For the best monitor mounts, look to ergotron.
Here is one dual monitor mount:
https://www.ergotron.com/en-us/products/product-details/45-231#/
They are top quality but expensive.
If you want two monitors that are separately adjustable, buy two mounts.
I use two of these:
https://www.ergotron.com/en-us/products/product-details/45-228#/
You will want to know the weight of the two monitors as well as the vesa hole dimensions( I think yours is a nominal 100 x 100)