Please stop referring to Telegram as an "encrypted app" that is somehow equivalent to Signal. All Signal messages are end-to-end encrypted by default. The only end-to-end encrypted messages on Telegram are one-to-one messages where you have specifically turned end-to-end encryption on.
Yeah, I was gonna say. Gillian posted this like a month ago and a bunch of us gave the same feedback about Telegram. Weird that she ignored that and just posted it again
Do not put Telegram on this list. Use message auto delete on signal, do not write down sensitive stuff even there.
Really though do not fucking use Telegram you really ought to know better.