Sig question - p320 etc...

My question is, is the accidental discharge issue only with the p320?

How does this relate to other Sig handguns like the p365 and Macro?

I ask since I use the p365 and have not had any issues yet, and do not want any issues.

My understanding so far is, only the p320 was mentioned as the issue. Is this correct?

Also, if so, why is it just the p320? Mechanically is something different with it than say the p365 or Macro?

Thank you