What are the differences between beta lactam and non beta lactam?

Beta Lactam: 

• Have a beta lactam ring within their molecular structure
• Are more powerful than non beta lactam antibiotics
• Examples include Penicillin Derivatives, Monobactams, Carbapenems, and Cephalosporins
• Inhibit the synthesis of bacterial cell walls

Non Beta Lactam: 

• Do not have a beta lactam ring within their molecular structure
• Are less powerful than beta lactam antibiotics
• Examples include Chloramphenicol, Vancomycin, Daptomycin, and Fosfomycin
• Inhibit protein and nucleic acid synthesis, disrupt the membranes of cells, and function as antimetabolites of bacteria