Hah! (or, Hic!).
My basic recipe (bear in mind, I like it sweet) is stunningly simple:
1 bottle sweet wine
1/2 cup liquor (brandy or more often Cointreau or similar)
1/2 cup juice.
Cut up fruit
Mix it all, chill, serve over ice.
My default is to use orange juice and orange liqueur. Mix that up depending on what you like - cranberry juice is nice (if you use plain cranberry juice, add a little sugar to taste).
For a white vs red sangria, similar ingredients. Interestingly, with a white sangria, I really preferred it cut slightly with ginger ale or lemon-lime soda, while a red sangria is perfect by itself.
I tried using peach schnapps + peach nectar a few times and the schnapps gave it an odd caramelized flavor which I didn’t like. Maybe that one would be better with regular brandy.
My default fruit is an apple, a lemon, and an orange cut into thin slices. Mix it up depending on the ingredients you’re throwing in: e.g. if you’re using peach nectar, some sliced peaches are nice and so on. I wouldn’t recommend whole cranberries, though if you simmered some with water and sugar until they pop that might be nice.
I usually slice the lemon differently from the orange (half round versus quarter) so people who wish to eat the fruit know which one they’re getting, as by the time the fruit is ready to be eaten it’s all purple anyway.
Bear in mind, Cointreau is a bit spendy; Triple Sec is cheaper but does not pack as much of an alcoholic punch - which may be a bug or a feature, depending on your aims. I haven’t compared the alcohol content of Cointreau vs regular brandy. I am not safe to drive after a glass of the stuff made with Cointreau (probably not with just Triple Sec either; I don’t try, in any case).
I would bet that apple cider + apple brandy + some ginger ale or ginger beer would be deelish but I have not tried it. Waiting for the next neighborhood party to try that.