How to get the smallest count one in entityframe core?

Here are two tables,one named State, the other named WorkingOn.

workers_name    state
aaa             onduty
bbb             offduty
ccc             onduty
ddd             offduty

workers_name    working_on
aaa             projectA
aaa             projectB
aaa             projectC
bbb             projectB
bbb             projectC
ccc             projectA
ccc             projectB
ccc             projectC
ccc             projectD
ddd             projectC

Now I want to get the worker which is on duty and working on the least number of projects.

I tried to achieve this by SQL code:

select state.name,count(workingon.working) from state join workingon on state.name=workingon.name group by state.name

However, I want to achieve it by Entity framework Core.

Would you please help me? Thank you.

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Here is the code of back-end:

 public class TestDBContext : DbContext
    {
        public virtual DbSet<statemodel> state { get; set; }
        public virtual DbSet<workingonmodel> workingon { get; set; }

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            optionsBuilder.UseSqlite("Data Source=123.db");
        }
        public TestDBContext(DbContextOptions options) : base(options)
        {

        }

    protected TestDBContext()
    {
    }
    protected override void OnModelCreating(ModelBuilder builder)
    {
        builder.Entity<statemodel>().HasNoKey();
        builder.Entity<workingonmodel>().HasNoKey();
        base.OnModelCreating(builder);
    }
}

public class statemodel
    {
        public string name { get; set; }
        public string state { get; set; }

    }

public class workingonmodel
    {
        public string name { get; set; }
        public string working { get; set; }

    }