How do you think names that have the plural "s" should be pronounced when they get the apostrophe? I researched this on the web and I couldn't find any very reliable results. For example, how should these three words be pronounced?
The Beatles'
Red Hot Chili Peppers'
Mr. Jingles'
Context: In case you don't know, The Beatles are a band, Red Hot Chili Peppers are also a band. "Jingles" is a last name that includes the plural "s". It is not a band name. I know that normally, when a plural word gets the apostrophe, you don't make a second /ɪs/ or /ɪz/ sound. For example, you don't say, /ɡɑɪzɪz/ when you say "guys' ". But I think we might pronounce another /ɪs/ or /ɪz/ when we say the words I gave because names like "The Beatles" represent one singular band while they also represent the people in the band. When you say "Mr. Jingles" also it represents one person. So I thought it may be correct to pronounce the example words I gave as, "The Beatles + /ɪz/", "Red Hot Chili Peppers + /ɪz/", "Jingles + /ɪz/".