Values may not be 100% accurate. Engine thrust, MTOW and range (full load) based on best options available for them. Passenger capacity in standard 3-class layout for widebodies and 2-class for narrowbodies (including A300, A310)
The A320 range can be longer than the A321 - 321 is heavier (+40/50 pax) and her engine has more thrust.
This is what Google “thinks”: " The Airbus A320-200’s range varies but is generally around
4,000 to 6,000 km (2,500 to 3,700 nautical miles), depending on payload, fuel capacity, and configuration, with figures often cited between 4,100 km (Lufthansa) and 6,200 km (Air Similan), allowing for many regional and some longer flights, even across oceans like the Atlantic with sharklets for better efficiency"
" The Airbus A321-200’s range varies by configuration but is generally around
5,000 to 6,000 km (3,000 to 3,200 nautical miles), enabling transcontinental U.S. flights, thanks to optional fuel tanks and higher thrust engines compared to earlier A321 models. Specific ranges cited by operators include 5,100 km (Condor), 5,950 km (Air Transat), and 5,600 km (Turkish Airlines), depending on passenger load and optional equipment like Sharklets"
And if we compare 321-200 with 321 LR we can see this