My collection has the first 4 of those stories you cite and I agree they are all excellent especially The Fall Of Edward Bernard but I do not have The Man From Glasgow. I think Rain is probably the best story of his that I have read. I think Maugham is one of the best short story writers in English of the 20th century that I have have come across.I finished Maugham's Collected Short Stories, Volume 1. What a fantastic collection of stories. All 30 or so stories contained in volume 1 are enjoyable, and many are terrific. There's a lot of death, suicide, adultery and drunkenness.
Will you be purchasing any further volumes of his short stories? I don't know if you have the Vintage or Penguin (or other) edition but assuming it is one of those you may want to seek out the stories The Vessel of Wrath, The Verger, P & O, The Book-Bag, The Alien Corn, The Door Of Opportunity, The Letter, The Colonel's Lady and Jane.
Cheers.