The latest MacBooks did the most Apple thing ever and replaced every single port with USB-C. That’ll be great once everything runs off of USB-C, but until then, you’ll need a dongle or two to plug in your legacy devices.
All of them feature a 60W USB-C passthrough charging port, but the $33 model gives you four USB 3.0 ports and HDMI, the $34 model opts for three USB ports, HDMI, and a card reader, and the $52 model has two USB ports, HDMI, VGA, and even ethernet. Just be sure to note the proper promo codes.