I reckon some folks may need to be careful what they wish for. My real interest in rod weights stemmed from a combination of distance buying of gear that it was simply not possible to get to see in the flesh, liking 15'+ rods where small weight (and balance) differences become increasingly important, and manufacturers (and many buyers) talking about rods being "super light" (or some similar superlative) without giving even a vague idea of what that may mean. I have zero interest in the weight of any rods other than float rods. Weight is of no importance to me if a rod doesn't spend most of its life in hand. That means nothing but rods I may use for floatfishing on rivers. It becomes increasingly important as rod lengths increase.
These days, quite a few manufacturers state an average weight. I'm quite happy with this, though I expect a variance of +-10g and possibly more. Manufacturers stating an average weight is far preferable to unqualified superlatives or stating bare blank weights, as some manufacturers have done in the past without ever being explicit about it. IIRC, the largest weight difference I've encountered in two examples of a single type of float rod was approximately 20g.
Lowest weight is not the deciding factor in what my favourite rods might be, but it's not a total irrelevance either. If all else is equal (action, power, balance etc), I'll choose the lighter rod every time if it's for trotting. If a float rod is going to be used on a stillwater (on rests), it's not that important. If a rod is more powerful, I know that will come with a weight penalty. If a rod is longer, weight is going to increase and it's likely to have an impact on balance too. As things stand, I have three rods that are lighter than the lightest equivalent length Acolytes. Only one of those three do I consider a favourite. However, my favourite trotting rods are a bit heavier. They are favourites because they are the best trotting rods I've ever used.
As far as I'm concerned no 13' float rod exceeding 160g can be considered "super lightweight" by modern standards. However, that can be revised slightly upward if the rod happens to be a genuinely powerful float rod. The lightest 13'er I own is about 15 years old and 139g. I know of one more recent 13'er that will be lighter, but don't own one. I do have a very recent top line 13' rod that the marketing types described as being light. At 202g, which is heavier than many rods they made in the 90s, I don't think it's reasonable to describe it as light. However, being really well balanced makes it useable without have to add weight or fitting a heavy reel to it. Compared to split can and fibreglass stuff, it's a veritable miracle.