A handful of seasons ago, they (IMO) re-committed to building an organization based on not only pitching, but position player depth throughout the minor-league levels. That's just starting to emerge at the major league level now. So yeah, by definition everyone that fits that category is "completely unproven" and doesn't have an established record of production "over the last couple of seasons". Three are here now. One is overmatched at the plate due to injury causing him to be up a little before his time. Another is injured himself. Of the rest, Contreras is fine but has never had more on his plate than he has right now, and it's showing. I believe Winker needs to get further removed from the health issues before a verdict is issued. Anderson is an ancillary guy & not a bad one because, along with his helmet & bat, he usually takes his brain to the plate with him. A couple others have had their inconsistency well documented.
End of the day, they'll have stretches where they score runs. Consistently? No. But those are the stretches where you have the opportunity to win 6 of 7, or whatever. The rest of the time, you try to break even. That's what the run prevention can do for you, and why they emphasize it so much. The games vs St.L are a microcosm of that. You documented their lack of offense in roughly half of those games (I actually thought their quality of ABs in the Tuesday win was as bad as any other game in the series). Yet they went 3-3.
You want a lineup that looks like that of other teams? The biggest culprit there IMO is Yelichs' slide & Hiura falling off the planet. That was supposed to be your 2 & 3 hitters, or 3 & 4.