Not really familiar with the suffix's like G, AC, AX. Will have to do some research. Stumbled upon other suffixes like N and AE. Don't know what they mean yet.
On 2.4 GHz, G is oldest, with N and most recently AX. Each step provides a performance boost. On 5 GHz, it's A, N & AX. AZ should be arriving shortly. As for AE, perhaps you meant AES, which has to do with encryption. It's mandatory with N and later. When configuring WiFi, do not configure it to support lower rates than you need. These day, you do not want B enabled and probably don't need G. With my access point, I couldn't turn off B, without also killing G. However, since all my devices support N, that's not an issue.
I haven't lost my mind. It's around here...somewhere...