I remember reading the LiFePo battery (CATL??) is around 250 w/kg. I don't know the wh/l compares on the two battery chemistries. The w/kg is comparable to Tesla's Panasonic batteries. While LiFePo was less energy dense in the past CATL continued to work on it and improve it. I believe it is actually cheaper, safer, and longer lasting than regular li-ion batteries. And the battery doesn't care if you charge it to 100% every night.And bulkier. The standard range Model 3 in China, and now Europe, is LiFePO. It is the same size and weight as the long range battery, but only two thirds the capacity.
What I am unaware of is why it is not more widely used.