There are multiple camps, but generally leave voters were the over 65s, the disenfranchised with nothing to lose and the chronic fuckwits.
Amazed that you have such accurate stats as to know this 
Sometimes there is pain in facing up to the truth for those who prefer inaccurate sound-bites supporting their own position - but the reality is that this is not accurate...
There are some facts which I believe are known:
- younger generations showed a poorer turnout
- older generations showed a higher turnout
- general turnout was high
- a majority voted to leave
we don't really know much more...
we can work on the basis that the majority of voters are not:
- over 65
- disenfranchised
- chronic fuckwits
Therefore I suspect that your assumptions are generally c. 100% wrong 
I suspect that for many with wealth there was less perceived risk in leaving as generally a cushion of wealth allows you to cope better with the unknown. Equally, disruptive changes are an opportunity to make money - why has the pound and stock market been reacting as it has - not because of any underlying change in the asset value or financial stability of the UK or its companies - but because a time of change is a chance for speculators to make money - so for many of the wealthy, they can arguably desire disruptive change as they are not personally affected, and can make money from it...
Similarly for those with financial instability, or less understanding of issues change can be more scary, so there might be a tendancy to have voted remain not leave... particularly if there is some risk (mortgage / jobs / etc.)
The poor are more similar to the wealthy - if you have nothing, you have nothing to lose, so change is okay...
In Argentina in the early part of this century when there was a financial crash, the wealthy had their money off-shore and were not affected, as the value of assets (e.g. property) plummeted, they brought cash back into the country and purchased assets making themselves rich... The poor had nothing to lose, so were no worse off... The middle-class though had plenty to lose, not enough wealth to have hedged the changes / have their wealth off-shore and were virtually wiped out...
So I suspect if anything the poor / wealthy may have been more likely to vote leave, the middle class to vote remain
but we won't ever 100% know...