Well spoken, I agree with almost everything you wrote.
As to your question regarding what other groups are protected under the same law:
[…] ethnic group or other such group of persons with reference to race, colour, national or ethnic origin, creed, sexual orientation or transgender identity or expression […]
While I understand your hesitation, I fully feel that there are some groups that should be especially protected from deliberate persecution and harassment. Sweden has had a huge influx of Muslim immigrants in recent years, and prejudice is rampant. I would argue that you are much more exposed and discriminated against as an Arab or Muslim in Sweden today, than as a Jew, LGBTQ person, or black person.
That said, Islamism has absolutely no place in a democracy and the undercurrents of conservatism in the world (Islamism, the Republican party in the US, pro life movement, anti-trans sentiments etc) scare me. We should never sustain rules or practices in society based on religious commandments, especially when those infringe on the rights of other groups. Sweden is deeply secular, and I firmly hope we remain so.