Hm, this is really good to see. And it is good that you know that. But I suspect you are one of the few who know that.
Go to the homepage: https://itch.io/
Then choose Games (under 'Browse'): https://itch.io/games
There is a box called "Select a tag".
I might be blind but in this list I cannot find a tag "Amiga". So, who is supposed to know?
Please simply add it there so everyone knows - and the developer will be delighted for Amiga games now can be found :)
Thanks