OK, so short and sweet answer here is that the main fuse, electric panel and sub panels (like in the detached garage or to service the pool or dock equipment) should be ANYTHING but Sylvania which were later rebranded as Zinsco, Federal Pacific (a/k/a FPE), or Challenger panels. If the property is more than 30 years old then the insurer will require a ‘Four Points‘ inspection and these will cause the property to fail the electrical portion.
No insurance = No loan = No close.
And Yes, if you are paying cash then you could bypass this by NOT carrying insurance but who would have zero insurance on a house?