The difference between lo mein noodles and chow mein noodles is that lo mein noodles are boiled and then tossed with sauce as well as other ingredients for a nice chewy texture, and chow mein noodles are stir fried longer and can also be crispier than lo mein noodles,
Chow Mein means fried noodles, which results in crispy and drier noodles and Lo Mein means tossed noodles, which keeps the noodles soft and saucy.
Also when it comes to the difference of chop suey vs chow mein, chop suey is more about the saucy stir fry served with a carb and chow mein focuses on noodles as the base.
Chop suey is also a Chinese American stir fry that is made of mixed ingredients like veggies and protein, in a thicker and gravy like sauce and is often served over rice or sometimes crispy noodles.
Chow mein is a stir fried noodle dish in which noodles are cooked with meat and vegetables, in a thinner sauce.
Chow mein is also more traditionally Chinese and chop suey is an American creation and not Chinese creation.
Chow mein is also considered to be one of the signature dishes in Chinese cuisine, and chop suey is an American creation, which utilizes Chinese cooking techniques.
Chop suey ingredients include a mix of proteins like pork, chicken and sometimes shrimp, a variety of different vegetables like carrots, cabbage, celery, bell peppers, mushrooms, cauliflower, bean sprouts, baby corn, snow peas, aromatics like garlic and onions and a savory sauce that is made from soy sauce, broth and cornstarch for thickening, and is often served over noodles or rice.
Chop suey's beauty also lies in the flexibility of Chop suey, allowing for many variations with different meats, seafood and fresh or even canned vegetables.
Chow mein, which is a stir fried noodle dish consists of egg noodles, a savory sauce like soy sauce, oyster sauce, sesame oil, sugar, garlic, ginger and various different vegetables like cabbage, celery, carrots, often with added protein, like chicken or shrimp, which creates a flavorful mix of soft and also slightly crispy textures.