Maybe this script can help.
The output will export excel files contains all parameters like title, type, itemid, etc.
from arcgis.gis import GIS
import pandas as pd
portal = GIS("url portal", "username", "password")
users_all = portal.users.search()
def get_item(user):
list_items = {}
content_item = user.items()
for item in content_item:
list_items[item.itemid] = item
folders = user.folders
for folder in folders :
folder_items = user.items(folder=folder['title'])
for item in folder_items:
list_items[item.itemid] = item
pd.DataFrame(list_items).transpose().to_excel(str(user.username)+'.xlsx')
for i in range(len(users_all)):
print("extract "+ str(users_all[i]) + "data to excel...")
get_item(users_all[i])