Order of nextTicks and microtasks

When I was writting some code I bump into incorrect as I think behaviour of nextTick queue and microtask queue.

Ok, example of the code will be the following:

process.nextTick(() => console.log(1));
Promise.resolve().then(() => console.log(2));
Promise.resolve().then(() => console.log(3));
setImmediate(() => {
  Promise.resolve().then(() => console.log(4));
  process.nextTick(() => console.log(5));
});

it will output:

2
3
1
5
4

However, If I'll wrap that code into setTimeout

setTimeout(() => {
  process.nextTick(() => console.log(1));
  Promise.resolve().then(() => console.log(2));
  Promise.resolve().then(() => console.log(3));
  setImmediate(() => {
    Promise.resolve().then(() => console.log(4));
    process.nextTick(() => console.log(5));
  });
})

you will see another order of outputs:

1
2
3
5
4

So why do I see that microtask will be first rather than nextTick without wrapping by setTimeout?

Node.js version

v18.9.0