Is there a similar method to GetDescendants or GetChildren which makes scripts work inside Parts?

When using GetDescendants or GetChildren to make a loading screen, scripts load, but don't work. Is there a similar method to use which makes scripts work inside Parts, MeshParts, etc?

Here's my code, to check if I'm doing something wrong:

local Players = game:GetService("Players")
local ContentProvider = game:GetService("ContentProvider")
local TweenService = game:GetService("TweenService")
local ReplicatedFirst = game:GetService("ReplicatedFirst")

local PlayerGUI = Players.LocalPlayer.PlayerGui

local loadingScreen = script.ScreenGui
loadingScreen.DisplayOrder = 20
loadingScreen.Parent = PlayerGUI

local Lobby = game.ReplicatedStorage:WaitForChild("Lobby")
local toLoad = Lobby:GetDescendants()

local loadingRing = Instance.new("ImageLabel")
loadingRing.Size = UDim2.new(0, 256, 0, 256)
loadingRing.BackgroundTransparency = 1
loadingRing.Image = "rbxassetid://4965945816"
loadingRing.AnchorPoint = Vector2.new(0.5, 0.5)
loadingRing.Position = UDim2.new(0.5, 0, 0.5, 0)
loadingRing.Parent = loadingScreen.Background

local counter = Instance.new("TextLabel")
counter.Font = Enum.Font.Gotham
counter.Position = UDim2.new(0.5, 0, 0.75, 0)
counter.BackgroundTransparency = 1
counter.TextColor3 = Color3.fromRGB(246, 246, 246)
counter.AnchorPoint = Vector2.new(0.5, 0.75)
counter.TextSize = 45
counter.Parent = loadingScreen.Background

local total = #toLoad

local tweenInfo = TweenInfo.new(4, Enum.EasingStyle.Linear, Enum.EasingDirection.In, -1)
local tween = TweenService:Create(loadingRing, tweenInfo, {Rotation = 360})

ReplicatedFirst:RemoveDefaultLoadingScreen()

for i, v in pairs(toLoad) do
	counter.Text = "Loading: " .. i .. "/" .. total .. " " .. v.Name
	tween:Play()
	ContentProvider:PreloadAsync({v})
end

Lobby.Parent = game.Workspace

wait(8)

loadingScreen:Destroy()

Have a great day and happy Pride Month! (Sorry if my English is not that good; I'm not a native speaker and I'm still learning)