Singing help (different between falsetto/head voice and range)?

Ok hey,

So I'm a bit stuck here, I'll explain my first dilemma which is more a simple characteristic of my voice; so the lowest note I can reach (I believe to be) Is an e0 and that chest voice further goes to a c4. From there the second type of voice' (I believe this to be my head voice) seems to completely vary in tone and can range from an f#3-d6 and my final falsetto (or what I believe to be a falsetto due to its airy nature) can go from that d6 to around a g/a6. this seems to be around a 7 octave span and was wondering if I am misreading any of this? I use my phone pitch recorder app to measure and it gets a little bit dodgy around the 0 octave.

The second is that my falsetto is very confusing.. As said I know the highest notes but aside from the 6th octave, the only notes I can reach in falsetto are d3 to a4 and was wondering if I am correctly doing falsetto/head voice as my natural head voice starts around a e4 and I have to push to go to the 3rd octave with it. Now from what I can tell, generally a head voice still sounds quite thick whereas mine is very streamline... like a recorder or clarinet meanwhile I can only sufficiently push my natural tone voice to around a c4 with effort; although when I add nasal (allike the style or pop punk or wheatus esq sounding I can push (with alot of effort) to a g4.

Sorry my voice is extremely confusing and was wondering if someone can offer some clarity.am prepared to provide recordings but they won't be very high quality.