In a large pot, melt 1 1/2 Tbsp butter over medium heat. Add onion, carrot, and celery and saute until tender, about 4 minutes. Add chicken broth, potatoes, oregano, thyme, and bay leaf and season with salt and pepper to taste (slightly under-season with salt as the ham and bacon will add more saltiness to soup). Bring mixture to a boil over medium-high heat, then reduce heat to medium, cover with lid and allow to cook until potatoes are very tender, about 17 - 20 minutes, stirring occasionally. Reduce to warm heat, stir in ham and corn.In a medium saucepan, melt remaining 4 Tbsp butter over medium heat. Add flour and cook mixture, stirring constantly, 1 1/2 minutes. While whisking, slowly add in milk, and whisk vigorously to smooth lumps, season with salt and pepper to taste. Bring mixture to a boil and allow to thicken, whisking constantly. Remove from heat, stir in sour cream or cream. Pour and stir milk mixture into soup mixture. Serve warm topped with bacon and chives.Recipe Source: Cooking Classy, inspired by Damn Delicious