Looking for a more effective solution to load gltf models

gltf_loader_solution.js

// Model 1

// Model 1 Maps
const s1RoomColor = textureLoader.load('/Threesources/Textures/HighRes/s1RoomBaseColor.jpg')
const s1RoomRoughness = textureLoader.load('/Threesources/Textures/HighRes/s1RoomRoughness.jpg')
const s1RoomMetalness = textureLoader.load('/Threesources/Textures/HighRes/s1RoomMetallic.jpg')
const s1RoomNormal = textureLoader.load('/Threesources/Textures/HighRes/s1RoomNormal.jpg')
const s1RoomOpacity = textureLoader.load('/Threesources/Textures/HighRes/s1RoomOpacity.png')

// Model 1 Flip
s1RoomColor.flipY = false
s1RoomRoughness.flipY = false
s1RoomMetalness.flipY = false
s1RoomNormal.flipY = false
s1RoomOpacity.flipY = false

// Model 1 Material
const s1RoomMaterial = new THREE.MeshPhysicalMaterial({
    map: s1RoomColor,
    roughnessMap: s1RoomRoughness,
    metalnessMap: s1RoomMetalness,
    normalMap: s1RoomNormal,
    alphaMap: s1RoomOpacity,
    transparent: true,
    opacity: 1,
    metalness: 0.5,
})

// Model 1 Loader
loader.load(
    '/Threesources/Mesh/GLB/s1Room.glb',
    (s1Room) => {
        s1Room.scene.traverse((child) =>
        {
           child.material = s1RoomMaterial
           child.receiveShadow = true
        })
            scene.add(s1Room)
    }
)

// Model 2

// Model 2 Maps
const s2RoomColor = textureLoader.load('/Threesources/Textures/HighRes/s2RoomBaseColor.jpg')
const s2RoomRoughness = textureLoader.load('/Threesources/Textures/HighRes/s2RoomRoughness.jpg')
const s2RoomMetalness = textureLoader.load('/Threesources/Textures/HighRes/s2RoomMetallic.jpg')
const s2RoomNormal = textureLoader.load('/Threesources/Textures/HighRes/s2RoomNormal.jpg')
const s2RoomOpacity = textureLoader.load('/Threesources/Textures/HighRes/s2RoomOpacity.png')

// Model 2 Flip
s2RoomColor.flipY = false
s2RoomRoughness.flipY = false
s2RoomMetalness.flipY = false
s2RoomNormal.flipY = false
s2RoomOpacity.flipY = false

// Model 2 Material
const s2RoomMaterial = new THREE.MeshPhysicalMaterial({
    map: s2RoomColor,
    roughnessMap: s2RoomRoughness,
    metalnessMap: s2RoomMetalness,
    normalMap: s2RoomNormal,
    alphaMap: s2RoomOpacity,
    transparent: true,
    opacity: 1,
    metalness: 0.5,
})

// Model 2 Loader
loader.load(
    '/Threesources/Mesh/GLB/s2Room.glb',
    (s2Room) => {
        s2Room.scene.traverse((child) =>
        {
           child.material = s2RoomMaterial
           child.receiveShadow = true
        })
            scene.add(s2Room)
    }
)

// Model 3

// Model 3 Maps
const s3RoomColor = textureLoader.load('/Threesources/Textures/HighRes/s3RoomBaseColor.jpg')
const s3RoomRoughness = textureLoader.load('/Threesources/Textures/HighRes/s3RoomRoughness.jpg')
const s3RoomMetalness = textureLoader.load('/Threesources/Textures/HighRes/s3RoomMetallic.jpg')
const s3RoomNormal = textureLoader.load('/Threesources/Textures/HighRes/s3RoomNormal.jpg')
const s3RoomOpacity = textureLoader.load('/Threesources/Textures/HighRes/s3RoomOpacity.png')

// Model 3 Flip
s3RoomColor.flipY = false
s3RoomRoughness.flipY = false
s3RoomMetalness.flipY = false
s3RoomNormal.flipY = false
s3RoomOpacity.flipY = false

// Model 3 Material
const s3RoomMaterial = new THREE.MeshPhysicalMaterial({
    map: s3RoomColor,
    roughnessMap: s3RoomRoughness,
    metalnessMap: s3RoomMetalness,
    normalMap: s3RoomNormal,
    alphaMap: s3RoomOpacity,
    transparent: true,
    opacity: 1,
    metalness: 0.5,
})

// Model 3 Loader
loader.load(
    '/Threesources/Mesh/GLB/s3Room.glb',
    (s3Room) => {
        s3Room.scene.traverse((child) =>
        {
           child.material = s3RoomMaterial
           child.receiveShadow = true
        })
            scene.add(s3Room)
    }
)

// Model 4

// Model 4 Maps
const s4RoomColor = textureLoader.load('/Threesources/Textures/HighRes/s4RoomBaseColor.jpg')
const s4RoomRoughness = textureLoader.load('/Threesources/Textures/HighRes/s4RoomRoughness.jpg')
const s4RoomMetalness = textureLoader.load('/Threesources/Textures/HighRes/s4RoomMetallic.jpg')
const s4RoomNormal = textureLoader.load('/Threesources/Textures/HighRes/s4RoomNormal.jpg')
const s4RoomOpacity = textureLoader.load('/Threesources/Textures/HighRes/s4RoomOpacity.png')

// Model 4 Flip
s4RoomColor.flipY = false
s4RoomRoughness.flipY = false
s4RoomMetalness.flipY = false
s4RoomNormal.flipY = false
s4RoomOpacity.flipY = false

// Model 4 Material
const s4RoomMaterial = new THREE.MeshPhysicalMaterial({
    map: s4RoomColor,
    roughnessMap: s4RoomRoughness,
    metalnessMap: s4RoomMetalness,
    normalMap: s4RoomNormal,
    alphaMap: s4RoomOpacity,
    transparent: true,
    opacity: 1,
    metalness: 0.5,
})

// Model 4 Loader
loader.load(
    '/Threesources/Mesh/GLB/s4Room.glb',
    (s4Room) => {
        s4Room.scene.traverse((child) =>
        {
           child.material = s4RoomMaterial
           child.receiveShadow = true
        })
            scene.add(s4Room)
    }
)