Theoretically, it should be between 3060 and 3060 Ti; and looking the 3060 8GB vs 3050 8GB in the benchmarks show that 4060 Ti has only 20-25% performance uplift compared to 4060. Also, if 4050 has 8GB with 128 bit bus(along with 2560 cores), it would better buy comparing x60 classes. I expect these specs:
RTX 4050 8GB, 128 bit, $249 w/ performance of 2060+10%
RTX 4060 8GB, 128 bit, $349 w/ performance of 3060+15%
RTX 4060 Ti 8GB/10GB, 128/160 bit, $399 w/ performance of 3070
RTX 4070 12GB, 192 bit, $599 w/ performance of 3080 12GB
For me, 4050 and 4070 are best of the 40 series in terms of VRAM, price, and performance. 4060, 4060 Ti, and 4080 are worst values. Maybe, if 4060 Ti has 10GB, it would be as good as 4070 in terms of price-performance.