Tumi voyager collection is light weight and great quality. LV has the Bh or Speedys are very light. Coach has the ergo collection that's very light as well.
No, I consider them all lightweight and the ones I mentioned "some stlyes" you need to check those brands IRL because some styles from those designers are a little heavier, while others are very light.
I forgot to mention the regular size (not the large) Gustto Baca. VERY lightweight!
Good luck!