Which MacBook supports Thunderbolt 3 and has regular USB 3 ports? I'm looking to upgrade my MacBook Air to something with the new Thunderbolt 3 ports, but also has USB 3 ports. There seem to be so many models out there, but I didn't find one. 

Which MacBooks have Thunderbolt 3 and USB 3 ports without the need of an extra adapter?
Which MacBook supports Thunderbolt 3 and has regular USB 3 ports??


None.

Currently, the only "MacBook" that supports Thunderbolt 3 are the MacBook Pros that were released in 2016 and on.  Those only have USB-C type Thunderbolt ports.  If you are looking for something that will give you USB-A ports along with USB 3.0 compatibility, you will need a (dreaded) dongle.  

The 2016 MacBook Pro 15" (with and without Touchbar) has the following ports:


  Charging and Expansion Four Thunderbolt 3 (USB-C) ports with support for:
  
  
  Charging
  DisplayPort
  Thunderbolt (up to 40 Gbps)
  USB 3.1 Gen 2 (up to 10 Gbps)
  


The 13" model has only 2 Thunderbolt ports:


  Charging and Expansion Two Thunderbolt 3  (USB-C) ports with support for:
  
  
  Charging
  DisplayPort
  Thunderbolt (up to 40 Gbps)
  USB 3.1 Gen 2 (up to 10 Gbps)
  


The MacBook Air (2015) only supports Thunderbolt 2 while the latest MacBook only support USB-C with DisplayPort (no Thunderbolt).