Modify specific groups inside a .bttpreset. Tested on Python 3.8.4, (normally should work on 3.6+). groups_to_modify.json included.

AQTGroupModifier.py

## AQTGroupModifier.py: Modify specific groups inside a .bttpreset
# Laurent Bourgon 2020

## IMPORTS
# Librairies
import os
import sys
import json
import shutil

## VALUES
# USAGE VALUES
USAGE: str = " ".join(
    [
        "AQTConditionExcluder.py",
        "<input: *.bttpresetzip>",
        "<output: *.bttpresetzip>",
        "| OPTIONAL: ",
        "<modifiers: *.json>",
    ]
)

TEMP_DIR: str = "./AQTGM_TEMP"
DEFAULT_JSON = "./groups_to_modify.json"
PRESET_FILE = "presetjson.bttpreset"
# PROPERTY VALUES
BUTTON: str = '"BTTTouchBarButtonName" : "{}",\n          "BTTTriggerType" : 630,'
GROUP: str = '"BTTOpenGroupWithName" : "{}",'


## GET PARAMETERS
# INPUT / OUTPUT
try:
    preset_file_path: str = sys.argv[1]
    preset_output_path: str = sys.argv[2]
except IndexError:
    sys.exit(f"ERROR: Incorrect Usage\n{USAGE}\n")
# GROUPS TO MODIFY
try:
    modify_file_path: str = sys.argv[3]
except IndexError:
    modify_file_path: str = (
        DEFAULT_JSON
        if os.path.isfile(DEFAULT_JSON)
        else sys.exit(f"No JSON with the groups found, please specify one.\n{USAGE}\n")
    )


## DATA PREPARATION
# Create a temporary folder
shutil.unpack_archive(preset_file_path, extract_dir=TEMP_DIR, format="zip")
# Open the preset file and read data from it
with open(os.path.join(TEMP_DIR, PRESET_FILE), "r", encoding="utf-8") as preset_file:
    preset_data: str = preset_file.read()
# Open the modify file and load from json
with open(modify_file_path, "r") as modify_file:
    modify_json: dict = json.load(modify_file)

## DATA MODIFICATION
# Loop through groups to modify
for group in modify_json["groups"]:
    # Change button settings
    preset_data: str = preset_data.replace(
        BUTTON.format(group), BUTTON.format(f"{modify_json['prefix']} {group}")
    )
    # Change action settings
    preset_data: str = preset_data.replace(
        GROUP.format(group), GROUP.format(f"{modify_json['prefix']} {group}")
    )

## DATA WRITING
# Overwrite the current file
with open(
    os.path.join(TEMP_DIR, PRESET_FILE), "w", encoding="utf-8"
) as preset_output_file:
    preset_output_file.write(preset_data)
# Archive temp folder
shutil.make_archive(preset_output_path, format="zip", root_dir=TEMP_DIR)
# Rename temp folder to remove .zip extension
os.rename(f"{preset_output_path}.zip", preset_output_path)

## DATA CLEANING
# Delete temp folder
shutil.rmtree(TEMP_DIR)

groups_to_modify.json

{
    "prefix": "🔵",
    "groups": [
        "Emoji",
        "Kaomoji",
        "Emotes",
        "Support Yuuiko!",
        "AQT Settings Sections",
        "AQT MUSIC SETTINGS",
        "Restart Alert",
        "AQT Settings",
        "AQT Setting - Update Notifications",
        "AQT Setting - Media Shortcuts",
        "AT Setting - Notification Badges",
        "BTT_EDIT",
        "██ EXPANDED WIDGETS ██",
        "Blank",
        "Clipboard Widget",
        "DiscordCallWidget",
        "OneKeyboard",
        "Calendar Actions",
        "Calendar Actions full widget",
        "Reminders Actions",
        "Youtube Actions",
        "Youtube Volume",
        "Youtube Scrub",
        "Local Youtube Actions",
        "Local Youtube Volume",
        "Local Youtube Scrub",
        "Music Actions",
        "Music Seek",
        "Music Volume",
        "iTunes Actions",
        "iTunes Seek",
        "iTunes Volume",
        "Spotify Actions",
        "Spotify Seek",
        "Spotify Volume",
        "IINA Actions",
        "Connectivity Actions",
        "Connectivity Mirroring",
        "7-Day Forecast",
        "Click Pulse Slow",
        "Click Pulse Quick",
        "Click Pulse Slow and Shift",
        "Click Pulse Quick and Shift",
        "QuickMedia",
        "QuickSchedules",
        "QuickControls",
        "QuickApps"
    ]
}