Most EVs do not come with a jack or a spare tire. The self-sealing tires replace the compressor and sealant, which is worthless if you get a significantly sized puncture anyway.
My first EV was a 21 Bolt. It came with a tire inflator and sealant. My wife hit a small piece of metal in the road, and that was it for the tire. Low rolling resistance tires (LLR) are not as strong. If you switch to conventional tires, you will sacrifice range. I found a balance with my 21 Bolt and some Kumho tires, where I was still able to achieve 4.0 mi/kWh or better.
The wheel pattern for the Chevy Bolt is 5x105; the Chevy Cruze shares the same pattern. I bought a donut tire for a Cruze at a junkyard for $10. The spare sat in a 40-gallon storage container we placed in the back, along with a bottle jack, for trips. That car was totaled. Our 27 Bolt RS came with a useless tire inflator and sealant. Luckily, the wheel pattern didn't change, so we're already good to go.
The wheel pattern for your 2026 Equinox EV is 6x120mm. Here is a list of potential candidates for a spare that share the same wheel pattern as your Equinox EV.
Chevrolet Colorado (2015–2023)
GMC Canyon (2015–2023)
Chevrolet Traverse (2018–2023)
GMC Acadia (2017–2023)
Chevrolet Trailblazer (2021–2023)
Chevrolet Express & GMC Savana 1500 (2003–2014)
Cadillac XT5
Cadillac SRX (2010–2016)
Buick Enclave (2018–2026)
Buick Envision (2016–2020)
Best of luck with your new EV.