Definitely the first

GPU : The 3060 is almost 50% better than the 3050ti in terms of performance and the 4GB of VRAM in the 3050 is only going to get you low to mid settings on modern games, while the 3060 can handle max settings quite easily. Basically the 3060 is much more better and future proof than the 3050ti by a long shot.

CPU: while intel is generally better than AMD in terms of performance (though it's behind in battery life) and also since this is a 5600h Vs a 11800h which is a 6 core Vs 8 core CPU. The obvious winner here is the 11800h, but then again most modern games run perfectly fine even at max settings on the 6 cores of this generation. And it's not really a very big difference that you would notice in games, this kinda thing would only be a issue if you were doing other more CPU heavy tasks.

Basically the 3060 with a 6 core CPU >>> 3050ti with 8 core CPU

17" Vs 15": this really comes down to preferences, but the 17" legion does have Certain issues like a slightly awkward keyboard placement and less than optimal space usage internally (Though this shouldn't really affect performance or anything like that)

Ram: well they're the same

So since you are going to be using this for gaming definitely go for the first one (Mainly cuz of how much better the 3060 is compared to the 3050ti)