I like Dynalites for location work.
You asked for lists of other equipment and brands.
For backdrop stands: Manfrotto
For light stands, in rough order of increasing robustness, weight and cost: Manfrotto, Avenger (same company, more robust line) and Matthews (also called MSE)
Note: learn how to use light stands properly - this is one of the biggest differences I see between motion picture and still photo practice. Still photographers and their assistants often don't use good practice (cable running down stand and under one leg; legs out at full extent; weight properly balanced for starters).
Most versatile mid-range lightstand: Avenger A475B combo stand. I think it's worth having at least one of these. The Matthews Magic Stand is better and more robust, but it is heavier and quite a bit more expensive.
C-stands: manufacturers same as lightstands. You may want one or two. Get a 40" first, then a 20". Get at least one Broken Arm (can't remember what Avenger calls them) and Magic Fingers are handy as well.
Floor stand: There are a few. I use a Lowel Big Foot for small lights.
Miscellaneous bits: Lowel has a good range of lightweight, moderately priced gear. I use their Tota-flags, Tota-flectors and Lightflectors a lot. Lots more grip stuff suitable for location work, holding foamcore boards, cards, etc
Shot bags: Impact is fine for plain shot bags. Matthews Boa Bags are versatile and useful. Don't get sand bags.
Weights: One or two Lowel weights are handy for times when a shot bag or boa won't work well. They will sit on the strut of a lightstand (you have, of course, set the legs so the struts are horizontal) and they have 5/8" receptacles and spigots.
Flags, scrims etc: Matthews Road Rags are OK.
Cinefoil: get some black Rosco Cinefoil
Softboxes: I use Chimera, but I'm sure that there are others as good. If you may use video in future, get dual-use softboxes.