In my copy of Collins, the names Michael and Michel are transcribed as kind of a letter "c" ligatured onto an "italic long s" (as used for the sch sound).
It might also be described a block-printed lower case "g" with a hook ascending up and curving to the right off the upper right corner of the g.
Do you think they would include it in their IPA key?
Well, maybe next edition...
Wickepedia gives the symbol and describes it as:
a non-pulmonic velar implosive.
Non-pulmonic consonants are sounds which are made without the lungs. These include clicks (found in the Khoisan languages of Africa) and implosives (found in languages such as Swahili).
I had earlier thought these names were simply pronounced with the ich-laut. Obviously not.
So then I reasoned perhaps that Collins intends a voiced ich-laut, but that doen't seem to square with Wickipedia: Implosive?? In German?? Like Swahili??
Can anyone help?