But IMHO, the most ergonomic switches are low-travel ones. They increase my typing speed, reduce latency and make long sessions effortless.
Luckily, low-travel versions of many good quality keyboard switches are being produced and developed more often now to cater the gaming market.
For a simple, readily available option, I find the Apple Magic Keyboard more than good enough. It has really low latency [1]. I wonder if other low-travel switches are the same or if it has a particularly speedy firmware.