The third at the top is a conventions universal joint which typically is junk and light duty only. They fold over and break easily..
The second up is a swivel and a wobble. It stays together, and allows a great deal of torque on a nut or bolt that is at an unusual angle, or one that is offset and cannot be reached straight like a bell housing bolt.
The bottom one is a straight extension
If you've had the need to use the middle one, either with or without a swivel, you know there is no substitute, unless you prefer cutting holes with a hole saw in a firewall to reach bell housing bolts. I don't, and have used the wobble with or without a swivel so many times in 45 years that I can't count them.