https://elderscrolls.fandom.com/wiki/Thieves_Guild_(Skyrim)

Delvin Mallory's Jobs

• Numbers Job
• Fishing Job
• Bedlam Job

Vex's Jobs

• The Burglary Job
• The Heist Job
• The Shill Job
• The Sweep Job

Easiest Jobs

• Numbers (from Delvin)
• Burglary (from Vex)

Job Tricks

A Bedlam Job from Delvin and a Sweep Job from Vex in the same city results in both missions being done once the Sweep Job is complete.