Start here:

• Moral uncertainty - towards a solution? (Bostrom, 2009)
• A bargaining-theoretic approach to moral uncertainty (Cotton-Barratt and Greaves, 2019)
• Moral trade (Ord, 2015)
• Against moral advocacy (Paul Christiano)
• Fundamental value differences are not that fundamental (Scott Alexander)
• The enemy of the good (Trammell, 2020)

Further reading:

• Normative uncertainty (MacAskill, 2014)
• Normative uncertainty as a voting problem (MacAskill, 2016)
• Geometric reasons for normalising variance to aggregate preferences (Cotton-Barratt, 2013)
• The possibility of an ongoing moral catastrophe (Williams, 2015)
• Two-Envelopes Problem for Uncertainty about Brain-Size Valuation and Other Moral Questions (Tomasik, 2013)
• Gains from trade through compromise (Tomasik, 2013)
• Values spreading is often more important than extinction risk (Brian Tomasik)
• Effective altruism and free riding
• Coordination isn’t hard (Jessica Taylor)
• On values spreading (Michael Dickens)
• Conflict vs. mistake (Scott Alexander)
• The whole city is centre (Scott Alexander)