White Balance For Sunset Shots
Sunset warmth can be created with the camera's white balance settings without using a neutral density (ND) filter.
This white balance setting is particularly helpful if shooting in JPEG. JPEG images have more limitations in processing their details later. Therefore, the in-camera adjustment has to be almost precise to get the result.
RAW images can be post-processed later with any digital post-processing software to obtain the desired result. However, shooting in RAW doesn't mean that you should neglect all the necessary in-camera settings. Therefore, applying some correct settings to the white balance will ensure that you get almost the same result as you see at the time of the shoot.

This photo was shot in JPEG with a very simple setting to the White Balance for this warm hue.
How to create the desired sunset warmth?
Colour temperature is adjusted to the desired result using Kelvin (K) temperature which those presets white balance might not be able to achieve.
Here are the step-by-step techniques to set the white balance settings for sunset using the K temperature.

Scroll to the White Balance menu to look for Kelvin (K) temperature. The scale of K temperature is from 1000K to 10000K. Always start from 5000K for a neutral colour. Then increase the K number to get a warmer tone. Decreasing the number will result in a cooler tone.