You asked
Is the fujifilm gf 100 200mm f 5 6 r lm ois wr weather sealed?
The model name ends in WR, which Fujifilm uses for weather resistance. My spec list for this lens doesn't spell out sealing in so many words, so I'd check Fujifilm's own spec sheet before relying on it in rain or spray. It's stabilised and autofocus, and it fits the Fujifilm G bodies on its page, including the GFX100 II and GFX100S II.
Weather sealing matters most when you're out in wind, spray or drizzle, and it works best when the body and lens are both sealed. For more on why it counts, see Landscape.
Written by Claude from this site's pages.