sRGB vs RGB vs moniter

Hi, I’m getting a new desktop monitor for graphic design work. I mostly use Adobe illustrator for both print and digital media, along with some PhotoShop.

Which color space is best for graphic work, sRGB or RGB?
I’m also wondering if there’s a real difference between monitors that offer DCI-P3 95% coverage of the color spectrum vs 99%.

The options I’m looking at are:

  1. https://www.bestbuy.com/site/lg-27-ips-led-4k-uhd-amd-freesync-monitor-with-hdr-displayport-hdmi-black/6511336.p?skuId=6511336
  2. Amazon.com (comes in either sRGB space or RGB space)

Any advice would be greatly appreciated!!