Which HY companies could be impacted from the Boeing 737 Max?

All,

Its been some time since we thought about something… so here goes: Which HY companies could be impacted from the Boeing 737 Max? We note that 1) the grounding of planes could have a negative impact for suppliers and potentially operators, who were relying on the delivery and 2) that many operators have cancelled orders in recent years after oil prices fell, rendering the need to save on fuel costs less urgent. So depending on situation, this could cut either way.
No absolute killers here, but a look through some of the docs suggests: 

Tui: 

Took Delivery of the first five jets in 2018 from a total committed order of 68 between now and 2023 (the overall fleet size is 150 aircraft). 18 Boeing 737 Max were scheduled for delivery in 2019. Balance Sheet Commitments for the order totalled € 1,092.1m at Sep. 2018 (included two 787s and 63 737 Max).