I purchased this solid carbide roughing endmill, sometimes described as a ripping cutter.
The basic idea is that when cutting multiple teeth are in action and cutting the material at slightly different points and time and hence this reduces chatter and vibration. These smaller multiple teeth also lower the shock load during the cutter rotation, thus enabling a heavier cutting load.
Removing material with heavy milling cuts is also called hogging.
This 12mm solid carbide roughing end mill cost: £8