Older; though Lobo could give you much more information about them. Cross, for instance, was born in 1914 and died in the 1960s; "O'Byrne", or Bax, was born in 1883 and died in 1953; while Maurice Level wrote macabre tales of the conte
cruel type and was one of the shining lights -- if that's the proper term -- of the Grand Guignol theater, and was born in 1875, dying in 1926.
I don't know if you are familiar with the term, but in case you aren't:
Grand Guignol - Wikipedia, the free encyclopedia
As for Michael Arlen -- yes, sadly, most of his supernatural fiction is not at all atmospheric, though it is occasionally clever. Then again, it has been years since I've read anything by him, save for "The Gentleman from America", which I reread fairly recently in going through the Frazer/Wise
Tales of Terror and the Supernatural.
That one
is worth reading, though not for the "supernatural" element -- an extremely ridiculous story which one of the characters within the tale reads -- but rather for the truly nasty view of human beings the tale reveals. In this, it is similar to Shirley Jackson's "One Ordinary Day, with Peanuts". The basic story, though, bears strong similarities to Bierce's "The Suitable Surroundings" crossed with some elements of his "The Middle Toe of the Right Foot". Nonetheless, you may find it of some interest.
As for the rest of his work... I think I'd suggest John Kendrick Bangs instead; and, if you know anything about
his work, that's a rather telling statement....
By the way, Lobo... that edition of
The Other Passenger, from what I understand, only reprints nine out of the eighteen tales that were in the original edition. Do you know anything about that....?