According to the priority list, which functional group comes directly after alcohols in priority?

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In naming by functional group priority, higher-priority groups define the main suffix, while lower-priority groups are named as substituents. Alcohols have higher priority than thiols, so when both groups are present, the molecule is named as an alcohol and the thiol is treated as a substituent (as the mercapto prefix). That’s why the group that comes directly after alcohols in the priority sequence is the thiol. For example, a molecule with both –OH and –SH is named with the -ol suffix and the –SH group shown as mercapto- as a substituent. Carboxylic acids and aldehydes sit higher in priority and are not the next after alcohols, and amines are lower than thiols, so they wouldn’t be the immediate follower in the priority order.