Hi all,
I'm new here and this is my first post. BTW it's late here so I'll just make one post and then return again tomorrow.
A phobia is defined as an abnormal and/or irrational fear of something. With this definition in mind I don't believe there is any Islamophobia nor Christianityphobia, nor even homophobia. In the West we live under the tyranny of political correctness driven by the oppressive Socialist/Communist Left who abuse terminology merely for political gain. The word "phobia" is one such word that is being abused.
Regarding Islam, there are rational concerns in the West about it because of the levels of terrorism, the Sharia no-go zones, the rapes, discrimination, hate, etc, etc. As much as secular/moderate Muslims might try to downplay these very real threats, only an delusional person would disregard it.
Regarding Christianity, the hatred towards Christianity comes from the Socialist/Communist/Atheist Left in the West who dominate the mainstream media, the education system and politics, etc.
Regarding homosexuality, there is no phobia against it. Instead there is a rational concern about it because of the militant, hateful activism, persecution and discrimination against any Christian or westerner who dares to challenge the LGBT agenda being forced upon society.