Why do you keep mentioning all these particular people when you don't even know they are on the list? None of us have a clue so discussing the likes of Frank, Howe are a total waste of time anyway.
Frank has been talked about - he has been mentioned a number of times as someone we think very highly of.
If you exclude Alonso, De Zerbi, and Amorim, the list of managers we have actively been linked with/discussed as a possibility are:
Frank
Fonseca
Motta
Roger Schmidt
I think Marco Rose maybe as well but from a not brilliant source
Hoeneß has also been discussed in that he is similar style to us but not really linked
I can either mention and infer from the people mentioned as possibilities from reliable sources, or I can say I know no one can be reliably linked of discredited and it can be literally anyone
With the names mentioned and the comments made, and if you look at the above list, I don't think it's a crazy guess to now think it is Frank.
Howe I haven't mentioned seriously, it won't be him. But he is the exception in that I won't be able to back him as manager, due to his behavior as Newcastle manager, and due to the old boys club concern that would come from Hughes/Edwards/Howe coming together. But I can very confidently say that won't happen