At the moment, there are a few different connectors available for EV chargers. The industry is moving towards standardization with one connector soon, “NACS” or North American Charging Standard developed by Tesla. Most major EV manufacturers have recently indicated they will implement NACS within the next few years.
J1772

This connector is used for Level 1 and Level 2 charging. Most vehicles manufactured for sale in North America use this connector (the lone exception being Tesla, but an adapter is provided with the vehicle).
CCS Combo 1

This connector is used for Level 3 fast charging. Most EVs in North America use this connector; however, a few exceptions exist, such as the Nissan Leaf and Mitsubishi Outlander PHEV (Plug-in Hybrid).
CHAdeMo

This connector is also used for Level 3 fast charging, but as mentioned above, is typically only found on older EVs or the Nissan Leaf and Mitsubishi Outlander PHEV. This standard will be phased out over the next few years, but adapters will likely be available.
NACS (Tesla)

Currently used by Tesla and its Supercharger network, this connecter has quickly become the next standard across most EV manufacturers. As of 2023, major manufacturers and charging networks have agreed in principle to start deploying this on vehicles and equipment, likely beginning in 2025. This means that soon all EVs will be able to take advantage of Tesla’s Supercharger network using NACS natively or with an adapter.