They will all lean toward the sun. Your stems will have the flowers mostly in the sunny side. What marla is describing are Upfacing, Outfacing, or Dowward facing varieties. That is dependent on the culivar, and has nothing to do with the light source. You can have anyone of those 3 types, and still have it leaning toward the sun. As long as you are not dealing with the extremes of planting against a house, though, it might not be noticeable. They need a certain number of hours of sunlight a day. If they have that minimum, they are much less likely to show any leaning, though you still may have more blooms on one side than on the other.

A northwest window on top of the t.v. console is not enough light! It needs LOTS of very bright indirect light or a mix of indirect and dappled direct sun. The new growth is stretching because of low light levels and older leaves are prematurely dropping as the plant pulls needed resources our of old tissue to fuel growth. I've purchased several different plant species is self watering pots and invariably find them moderately to severely root bound, that is, when you go to knock the plant out of it's pot, there is nothing but a solid mass of roots, no loose soil. At this point the soil is exhausted. Fertilizing alone is of limited help. Re-potting must be done.

Does anyone know where this light is from? I saw it on an IG post and cannot find it anywhere.

Not sure, but if it's from Amber Interiors get ready to open up your pocket book. Those fixtures look hand blown. You may be able to find a hand-blown fixture from Etsy.com, similar and for a quarter of the price. I've found some amazing pieces from there.