Some people like to monitor the system panel by panel and will install SolarEdge or Enphase for this reason, but they are more expensive than standard inverters.

Shading is on a case by case basis, every property is different. Sometimes using Solaredge or Enphase for a minimal amount of shading is not worth it.

You should receive a shading chart showing the portion of your roof that is affected.

I’d be wary of any company that does not do this as part of the quotation process.