A mechanism to use FastNoiseLite as a proper RNG class.

FastNoiseRNG.cs

using System.Collections.Generic;
using UnityEngine;

public class FastNoiseRNG : FastNoiseLite
{
    #region Fields

    private ulong _position;

    #endregion

    #region Methods

    public float Next()
    {
        var noise = GetNoise(_position++, 0);

        // Remap from (-1, 1) to (0, 1)
        noise = (noise + 1f) / 2f;

        return noise;
    }

    public int NextInt(int max)
    {
        return NextInt(0, max);
    }

    public int NextInt(int min, int max)
    {
        var noise = Next();
        var value = Mathf.Lerp(min, max, noise);
        return Mathf.RoundToInt(value);
    }

    public T SelectRandom<T>(IReadOnlyList<T> list)
    {
        var count = list.Count;
        return count == 0 ? default : list[NextInt(count - 1)];
    }

    #endregion
}