The weight for each tube for Maxxis Welter Weight26x1.90/2.125 Presta valve is 161g. Front and back is 161g x 2pcs is 322g. Rim tape 2 pcs is 20g so the total weight for tube setup is 342g.
Notubes sealant per wheel is 2-3oz = 56.69905g x 2 wheels = est 113g
Notubes yellow tape and notubes valve are front and rear weight 22g.
113g + 22g = 135g
diff between tube and tubeless tires 342g - 135g = 207g