I think people are underestimating the route, which to me is definitely for the Ardennes specialists and punchy climbers.
The Witikon climb profile is here (can't get the media upload to work):
Route of UCI Road World Championships tracked with La Flamme Rouge editor. Winterthur > Zurich: 276.44 Km - Medium Mountain
www.la-flamme-rouge.eu
Evenepoel will certainly be the big favourite, with Van Aert, Benoot and Van Gils as his primary support, but Slovenia being able to start Pogacar, Roglic and Mohoric on that route is going to be a tough nut to crack.
Other candidates:
Denmark: Vingegaard, Skjelmose, Kron.
France: Alaphilippe, Bardet, Madouas, Martin.
GB: Pidcock, Yates, Yates, Hart.
Spain: Bilbao, Izagirre, Izagirre, Mas, Rodriguez.
Netherlands: Mollema, Poels, Arensman, Kelderman, MvdP.
Italy: Ciccone, Caruso, Ulissi, Rota.
Australia: Hindley, O'Connor, Vine, Matthews,
Colombia: Chavez, Buitrago, Rubio, Higuita.
USA: Kuss, Jorgenson, Powless, McNulty, Sheffield.
Portugal: Almeida, Costa, Guerreiro, Oliveira.
Switzerland: Schmid, Hirchi.
Germany: Zimmermann, Kämna, Buchmann, Schachmann.
Norway: Johannessen, Johannessen.
Ireland: Healy.
Austria: Gall, Konrad.
Canada: Woods, Gee, Houle.
Eritrea: Girmay.
New Zealand: Strong, Bennett.
Latvia: Neilands, Skujins.
Kazakhstan: Lutsenko.
Poland: Kwiatkowski, Majka.
Ecuador: Carapaz, Narvaez.