Based on this product's specifications, here are some alternatives and similar models
Telephoto lens Canon RF 100-400mm F5.6-8 IS USM Black
Summary description:
The Canon RF 100-400mm F5.6-8 IS USM is a compact telephoto lens designed for MILC cameras. It features a 12/9 lens structure, 0.41x maximum magnification, and Nano USM autofocus for fast and quiet focusing. With a diameter of 7.95 cm and a length of 164.7 mm, it is lightweight and portable, making it ideal for wildlife and sports photography.