None of these names are meant to be Hashem’s name, so they should be written out completely.
And, of course, spoken. For example, there is no problem whatsoever with the place name “Beis El” in Israel. One is not required (and, perhaps to TheReader’s point, should not) say “Bais Keil.”
Of course, I’m reminded of the old joke about a girl who goes out on a date and introduces herself as “BasKah.” He smiles and introduces himself as “Kelikaku.”
The Wolf