Mainstays 5" Stainless Steel Utility Knife

Walmart

Blade shape and size are highly similar, Blade color (silver) matches, Handle color (dark/black) matches, Handle design (smooth, unriveted, ergonomic) matches, Blade edge is straight, matching the source, No visible brand in frame, so Mainstays is plausible

IKEA VÖRDA utility knife

IKEA

Silver blade, Dark handle, Straight edge blade

MasterChef Utility Knife

MasterChef UK

Silver blade color matches, Dark handle color matches, Blade shape (utility knife) is consistent with the video, Handle design (riveted style) is consistent, Non-serrated blade matches