EF Core update data sequence

I have a use case where I want to reorder the priority of a task entity stored in the db using EF Core.

On the frontend the user can reorder the tasks in the column to indicate their priority from 1 to N, and when they finish they would save their work. There are two tables displayed to the user a Review list, and a Ready list.

When they save the work it sends the priority list for both tables back to the server which then updates the relevant data

priorityList.ForEach(x =>
{
    var task = context.Task.Find(x.Id);
    if (task != null && (task.Priority != x.Priority))
    {
            task.Priority = x.Priority;
            context.SaveChanges();
    }
});

My entity setup:

Task Entity

public class ItemTask {
    public Guid Id {get;set;}
    public string Title {get;set;}
    public int Priority {get;set;}
    public TaskList TaskList {get;set;}
}

Task List

public class TaskList {
    public Guid Id {get;set;}
    public string Title {get;set;}
    public List<ItemTask> ReadyList {get;set;}
    public List<ItemTask> ReviewList {get;set;}
}

The use case I want to move towards is that when user changes the order, it updates only the relevant data affected, as opposed to both lists. I have made it so that when relevant list changes it sends update to the service with Priority for all items in that list and follows the update process.

I am trying to figure out if there is a way to store sequence by default for the relevant list, and change only relevant data would make it more efficient and simpler.