I'll be turning 70 on 6/2017. I'll start receiving my full benefits then. I've been receiving spousal benefits from age 62 though.
Please inform me as to what's the maximum social security benefits one may receive which is, of course, based on one's income and contributions over a lifetime.
Just curious to know what one could potentially receive with a top % income
There is no set maximum benefit amount. Social Security retirement benefits are based on the highest 35 years of a person's wage-adjusted earnings (https://www.ssa.gov/pubs/EN-05-10070.pdf), and can continue to increase for as long as the person continues to work.
That said, the maximum possible monthly benefit rate for someone turning 70 this year who has had maximum earnings for at least 35 years and hasn't started drawing benefits yet is around $3600.
I'm confused about the first paragraph of your question, though. If you started drawing spousal benefits at age 62 you would have been deemed to have also applied for benefits on your own record at that time. However, if you're entitled to surviving divorced spousal benefits or widow(er)'s benefits, you could have started those benefits at age 62 without also filing on your own record.