Nearly every headphone has its own connector. Even within the same brand, each model of headphone is likely to require a different connector.
Even models with similar names often use different connectors. For example, the HifiMan HE-6SE uses a different connector than the HiFiMan HE-6SE v2 🤯
And, unfortunately, there isn't an accurate, frequently updated database that lists every headphone and their required connectors.
In order to ensure that we put the correct connectors on your headphone cable, please attach a clear, close-up photo of the connector(s) on your current (stock) headphone cable. Ideally, include an item of standard size in the image, such as a US coin, or a tape measure or set of calipers showing the dimensions of the connector.
Non-US coins are acceptable, however please tell us what the coin is, so that we can google its dimensions.
Here are a few examples of how to photograph the connectors: