Here’s a list of all the share requests with 20 or more votes that don’t have the on Freetrade label. Just browsing through this it’s understandable why they have not made it onto the app yet, like ARK Innovation ETF - ARKK which doesn’t have a Key Information Document so cannot be offered in the UK. Or [Request ] EasyJet - LON:EZJ which requires nationality declarations.
P.S. - I pulled the topics by votes and I haven’t checked the list against what’s on the Freetrade Universe. So purely relying on the on Freetrade tag.