There are many systematic forms of hate, but hatred of the poor may be the biggest.
Hatred and phobia are different things. A phobia is an intense,
irrational fear. People who are afraid of heights or small places do
not hate them; conversely, people who hate the poor do not fear them
(though they may feel disgust, which is not the same).
To avoid building confusion, let's not refer to systems of hatred as
"phobias". I disapprove of antigayism, antimuslimism and
antitransism, but I reject the terms "homophobia", "islamophobia" or
"transphobia".
Another systemic form of hatred, which the article cites an example of
but doesn't discuss, is hatred of atheists. In the domain of
religion, atheists are the most hated group. We should oppose
antiathism (short for antiatheistism) as well as antimuslimism and
antisemitism.