I found a few lens comparison videos worth sharing while working on my Fujifilm XF 100-400 f/4.5-5.6 R LM OIS WR + XF 1.4x TC WR review.
Fujifilm XF 56mm f/1.2 R vs. XF 90mm f/2 R LM WR
Fujifilm XF 16-55mm f/2.8 R LM WR vs. XF 18-55mm f/2.8-4 R LM OIS Zoom
Fujifilm XF 16-55mm f/2.8 R LM WR vs. XF 18-135mm f/3.5-5.6 R LM OIS WR