GSM/8000/1: The GSM codec is designed for efficient compression and is commonly used in mobile communications. It consumes relatively low data due to its compression techniques.

iLBC/8000/1: The iLBC codec (internet Low Bitrate Codec) is specifically designed for low bandwidth applications such as VoIP (Voice over Internet Protocol). It offers good voice quality while consuming less data.

PCMU/8000/1: Also known as G.711μ, PCMU is an uncompressed audio codec used in telephony systems. It consumes more data than the previous two codecs but is still considered relatively efficient.

PCMA/8000/1: Similar to PCMU, PCMA (G.711A) is an uncompressed audio codec used in telephony. It has a slightly different encoding algorithm but consumes a similar amount of data.

L16/8000/1: The L16 codec provides uncompressed audio with 16-bit depth and a sampling rate of 8000 Hz. It consumes more data compared to the previously mentioned codecs due to its uncompressed nature.

L16/8000/2: This codec is the same as L16/8000/1 but with 2 channels, resulting in stereo audio. It consumes the most data among the codecs you listed due to the uncompressed nature and the additional channel.