right now i'd say

and

of the chosen songs. Both have entries that can shine under the right circumstances.
if

go for KEiiNO they will be up there as well, but they're less certain.
I don't think any of the others have it.

,

,

and

(with Conan only) will be top 10, but won't win. Same for

if they choose Hatari but I'm assuming that they won't.
Of the internal selections, I think

is probably the most likely to surprise us with an interesting entry, followed by

, but this is largely a shot in the dark. WiWi claims

have a strong entry, but point me to the last time Switzerland wasn't an overrated fanwank?