I've tried it again and as of 4-14-2022, these are the standard features shown on the "Build Your Own" webpage:
01 Drive
01.1
PERFORMANCE AND MINIMALISM
135kW (181 hp) Electric Motor with 270 Nm ( 199 lb-ft ) torque
Single Speed Automatic Transmission with 2 levels of power regeneration
32.6 kWh Lithium-Ion battery
AC and DC charging (7.4 kW J1772 AC & CCS 50 kW DC)
Occasional Use Charging Cable (1.2 kW)
Dynamic Cruise Control with braking function
MINI Driving Modes - Sport, Mid, Green, Green +
01.2
HANDLING AND BRAKING
Dynamic Stability Control (DSC) incl. DTC + EDLC
Four-wheel disc brakes with Anti-lock Braking System (ABS) and Electronic Brakeforce Distribution (EBD)
MacPherson strut front/multi-link rear suspension
02 Technology
02.1
AUDIO AND TECHNOLOGY
8.8" touchscreen display with MINI navigation and Real Time Traffic Information (RTTI) including remote and connected service
Six speaker audio system with HD radio, Apple CarPlay and SiriusXM satellite radio with 12 month subscription
MINI central instrument with LED ring
Bluetooth connectivity for telephone and audio streaming
Multifunctional digital instrument display
02.2
COMFORT AND VERSATILITY
Heated multifunction leather-wrapped sport steering wheel
Comfort Keyless Access
Heated Driver and front passenger sport seats with additional bolstering
Front center armrest
60/40 split-folding rear seatback
Floor mats
03 Protection
03.1
CONVENIENCE AND SAFETY
8 airbags including side curtain and front knee airbags
Active Driving Assistant with Forward Collision Warning and Lane Departure Warning
LED headlights with bad weather lights and LED Union Jack taillights
Rear view camera
Teleservices and Emergency Call
ISOFIX (LATCH) Child Seat Restraint System
Tire-Pressure Monitoring System
Automatic modes for headlights and rain-sensing windshield wipers
Heated exterior mirrors and washer jets
03.2
WARRANTY
12 Year/Unlimited Mileage Rust Perforation Limited Warranty
4 Year/50,000 mile Limited Warranty
4 Year/Unlimited Mileage Roadside Assistance Program
8-year/100,000-mile High-Voltage Battery Warranty