Orange Pi, Banana Pi, plenty of other Chinese SBC makers who products don't necessarilly have names ending in Pi. Tons of those in places like Aliexpress. You can even try a Risk-V architecture if you're daring.

The problem is that their english language support is inferior, as is the software stack, plus the ecosystem is a lot smaller so there's a lot less info on those from other people out there. That said, as far as I can tell all of them have at least one Linux distro (at the very least ARMbian), some having more distros.

Still, it would be fine if all you want is a small computer with HDMI to turn it into a media player using Linux and something like Kodi.

Alternativelly, just get a Mini-PC with a low power intel chip like the N100 - which is actually cheaper than a Raspberri Pi 5 whilst being more powerful and with better peripheral compatibility since it has a PC architecture - and put the Linux with Kodi in it. Sure, it uses more power because it's not ARM, but not actually that much more (15w vs 8w for a Pi, if I remember it correctly).

Raspberri Pi devices are maybe twice the price of other devices with equivalent hardware, which means that the low-end low-power Mini-PCs are cheaper and yet more powerful and compatible than the high end Pi.

I have a mini PC just like that at home working as a TV Media Player (which a nice remote control and everything) and I even use it as a home server and home nas (remotelly controlled via web interfaces and SSH) since it's has far more power than needed for just being a media player.