Internally, SQL Server matches the snapshot agents to SQL Jobs. You can access this information from the distribution database:

select *

from dbo.MSsnapshot_agents as mssa

inner join msdb.dbo.sysjobs_view as sjv

on mssa.job_id = sjv.job_id

inner join msdb.dbo.sysjobsteps as sjs

on sjv.job_id = sjs.job_id

where sjv.category_id = 15

and sjs.subsystem = N'Snapshot'

and mssa.dynamic_filter_login is NULL

and mssa.dynamic_filter_hostname is NULL