Cook the waffle fries according to package directions.
In a bowl, toss together swiss and cheddar.
On a baking sheet or in a large cast iron skillet, spread half the waffle fries in an even layer. Top with half the cheese mixture, half the sauerkraut and half the corned beef. Repeat a second layer on top.
Preheat the broiler.
Broil the nachos until cheese is bubbling, about 5 minutes.
Drizzle Thousand Island over top and garnish with chives.
Serve immediately.
Recipe by Flying on Jess Fuel at https://www.jessfuel.com/reuben-style-irish-nachos/