I am trying to write something like:

you know who I am.

or:

you know what I am.



Below you can see my different attempts... (gülmeyin lütfen!) the more I am trying, the more confused I am getting... Please help!

ben kimim bilirsin.
benim olmayımı bilirsin.
benim varlığımı nedir bilirsin.
benim ne olduğunu bilirsin.
ben neyim bilirsin.

İs there any try close to the right translation?

I would say:
Kim olduğumu biliyorsun
... but I am a learner too

As I wanted to say: you know and always knew - that`s why I wrote "bilirsin" and not "biliyorsun". I hope it conveys this meaning. Is that right? About the other part I am still not sure... thank you harikayim for your answer!

if you write these questions on "Practice Turkish" forum, it would be more suitabe I think

yes, I doubted where to post it. As for the next question of that kind I will post it on practice turkish then.
Thank you k_s for your answer.

Kim olduğumu biliyorsun.