What is the BSL sign for favourite?

[Charlotte07]

I want to expand my vocabulary in sentences and the word favourite would be a small step to being able to have better conversations.

[Lead Academy]

👉 Tap your chin twice with the middle finger of your dominant hand, while keeping the other fingers extended.

This motion represents the idea of something being personally significant or preferred. Let me know if you’d like a video or illustration reference to help! 😊

4o

[Trixie]

Hi there,
I'm learning BSL at the moment and I've found four different signs for "favourite" online at signbsl.com:

1 - two thumbs up making small cycling motion with each other in front of chest

2 - thumbs of dominant hand taps chin twice

3 - both thumbs start at chin, then move outwards and downwards

4 - thumb of dominant hand on chin, thumb of secondary hand held lower down in front of chest, then both hands move downwards away from the body

Now here is a fifth version!  I must admit to being very confused!  This isn't the first time that I've found multipe signs for the same word, and it's usually a very often-used word.

HELP! Any advice?