Some harness are designed in a figure 8 way where each loop goes down around a leg and nothing touches the neck. I will try to find a pic for you.
Not a figure 8 one, but here's a
no choke harness
For the life of me, I can't find the brand names of the next two, but I know the first one (I think it is UK9 brand) you can get at high-end dog/cat food stores.