Here both 16 channels and 4 channel upstream bonding were enabled at the same time.
You can identify the presence of 16 downstream channels bonding by having IDs greater than 8. Each time you reboot your modem you'll lock onto different channels.
Next, sometime later, the profiles get updated. 100/5 customers seems to jump up to 100/10. At this point, if you get a new 16x4 modem, you should see the 300/20 profile.
Why, well because Time warner cable made a business choice they want you to rent a modem than give 8x4 modems the speeds they can support.
Nah - A 16x4 modem is required for good performance. You are sharing channels with other customers. You'd rarely get consistent full speeds if you needed all 8 channels dedicated to you.
The profile is set higher than 300mbps (the 100mbps profile is set at 118mbps, so the 300mbps profile is probably provisioned at around 350mbps, which is definitely NOT possible with the 8x4 modem).
The 200/20 profile is probably do-able on an 8x4 modem, but again, TWC over-provisions. 236 out of a total of 304 mbps is pushing things a bit.