RE: 16-18 B ; yes, something running in the lab right now. (Gemma 4).
Also can make Qwen 3's (Version 3) moes like Llama3.2-8X3B as well ; I have some of these at my repo too.
I have built a few GPT-OSS ; and some 12B [mistral nemo] as well as mistral nemo "large" 15-17Bs...
A lot of options ;