Hey there,
Very tough question to answer because everyone will be very different. It'll depend on their entire financial situation, tax profile, risk tolerance, etc.
That being said, that is a goal for many - including myself. Build a portfolio of income generating stocks and generate enough income to either live off of, or cover the majority of your expenses. So it is very much a common goal among retirees. It is likely that they will focus moreso on foundational stocks with stable and reliable dividends. Most also look for a higher than average yield as lower yield stocks may not generate enough income for them. As they will be in their retirement, capital preservation and dividend income will be top priorities so finding a blend of safe dividend with some capital appreciation is ideal.
For me, when i built my dividend growth portfolio i bought with the intention of holding well into my retirement and that will require little maintenance -this stocks like FTS, the Big 6 banks, etc. Strong stocks, offering nice and safe yields.
Hope that helps - may not answer your question exactly but we can't possibly give individual advice in their situation since there are many, many factors at play.
Mat