As a person living in a country where a big portion of consumers drink lightly sweet red wines, I fined many of these examples quite weird, if OP wasn’t looking for “anything heavy or with lots of sugar”.
For example even if Brachettos are light in body, many people don’t realize they most of them are not slightly sweet or semisweet - they are fully sweet. Most of the examples I’ve tasted have come in 80-150 g/l RS; that’s not semisweet, that’s full on dessert wine. Furthermore, I wouldn’t call them “red wines” - they are red sparkling wines.
Ditto for Bugey Cerdon, although they are typically less sweet, something like 50-80 g/l. However, I wouldn’t call them red wines, either. Sparkling rosé wine is closer. Love them, though. Fantastic wines.
Barolo Chinato is a ridiculous suggestion. It’s basically sweet red Vermouth that is only based on tannic Barolo. Can’t imagine having it with any kind of food that would call for a light, slightly sweet red. It might be lighter than Vintage Port, but beyond that it can be quite hard to find anything “lighter”. Still love these wines, but I’d say they definitely do not fit the bill.
Freisas used to be made in an off-dry, slightly sparkling style, but I’ve had quite a many Freisas in my life and I can’t remember tasting a single contemporary Freisa that wasn’t bone dry. Finding a sweeter Freisa can be quite a task today.
Off-dry red Lambrusco is much closer to what one might look, but that’s still sparkling wine, not still red. However, I think they are lovely wines and a great suggestion if one doesn’t mind bubbles.
I think Khvanchkara is by far the only suggestion that actually fits the bill. Georgian semisweet reds tend to clock in at 25-40 g/l, are something like 10-12% ABV, typically have high acidity plus a little bit of tannic structure to offset some of that sweetness and are very light on their feet. They might feel a bit weird if you are not used to sweetness in reds, but they actually feel like the rare type of still red wines in which a good dose of RS feels natural, not gimmicky - or a way to just mask faults and make a cheap, low-quality red wine taste drinkable to an unsavvy consumers.
Khvanvhkara is probably the most common style of wine one might see, but definitely not the only one. Semi-sweet Georgian styles include also appellations like Kindzmarauli, Ojaleshi, Akhasheni, Pirosmani and Alazani.
And in addition to these, there are of course those “appassimento” wines and others like that from Italy that are so popular around here in the Nordics. These are simple, often relatively light red wines where the flavor and richness comes mainly from the 8-25 g/l of residual sugar. You don’t have to have any quality grapes to make these - just leave enough residual sugar and people will lap it all up. I can’t understand why anyone would touch these monstrosities, but I’m in the minority, since these are top sellers in the Finnish and Swedish wine market! Anyways, these can be categorized under “cheap plonk with plenty of RS”, so these can be easily disregarded!