It's well documented that a higher level of education can qualify you for higher paying jobs.
So poverty, home ownership, and median income are ALL functions of education level.
Education is structured so that you have to finish one stage before moving onto the next. The people who get bachelors degrees ALL have high school diplomas.
There are no numbers for the chart, but the amount of white, black, and hispanic people with bachelors degrees is distributed exactly the same as high school diplomas, just a lower percentage across the board (except for asians).
There is a strong correlation between the number of each group with a bachelor's degree, with home ownership, and with income and the number of each group with a high school diploma.
So, what it really comes down to is "People who drop out of high school are on average less successful than those who do not".
That's not exactly a big secret. And since public high school is completely free, you can't cite "being poor" or "being underprivileged" as an excuse for not going to it. Nobody is making these kids drop out of high school just because they are a certain ethnicity. They decide, for whatever reasons, not to get their high school diplomas, and they end up not making as much money when they work.
I mean, it's not exactly rocket science. All throughout high school the teachers explain to the kids how important it is to get an education so they can get a good job and make lots of money. Most people have it figured out.