My absolute favorite is New Your Sour (Basically Whiskey Sour with a dash of red wine (and slightly different mixing ratios. Last time I made them with Acquafaba (basically bean water; the water you get from a can of chick peas) instead of egg white and let me tell you, that worked like a charm, can only recommend!
You can use Acquafaba instead (chick pea water). That actually works at least just as well, no taste, perfect texture. Many barkeeps prefer it from what I hear.