Photos ?

What kind of pictures? Pictures of the house?

Of what the shingles are that are existing. Shingle or shakes? Shingles are typically an even butt thickness (usually 3/8"), shakes are somewhat irregular, they call them medium (1/2" - 3/4" butt thickness) or heavy (3/4" - 1/1/8" butt thickness) shakes.

It is tapered.. Isthat shakes? Currently, what i have is about 1/2” before it tapers down

Yes pictures of the house, showing your roof.

Here is a picture. I took it a while ago of blooming trees. It shows the roof. I hope you can see what you are looking for.

Typically bit shingles and shakes are both tapered, exception being barn shakes as they are 3/8" one end to the other (and not used on a roof, lol).

I didn’t know they were different. The thickness is even.

You have shingles on that roof. Those are not shake shingles.

Shingles are sawn on both sides; shakes are usually sawn on on side & split on the other.

Yeah, looking at that pic ci_lantro is correct. Probably red cedar but no way to be 100% sure from here.

Where I live cedar shingles are not allowed we live in a major fire zone and those go up like tinder .

Shall i do the thick shingles or the thinner? Does thinners ones look tidier?

Here's a list of all the cedar shingles my supplier carries. You'll have to find out what is available locally. I would personally go with red cedar with a 5/8" butt, they will look better and last longer. Be prepared for sticker shock...

RC18PERFG18" #1 RC PERFECTIONS GREEN
BDLRC18PERFKD18" G+R RC KD PERFECTIONS
BDLRC18RR118" TEAL #1 R+R RC RAW
BXRC18RR1PG18" TEAL #1 R+R RC PRIMED GREY
BXRC18RRCT18" TEAL #1 R+R RC CEDARTONE
BXRC18RRCVG818" G+R CVG8 R+R RC RAW
BXRC18RRCVG8PG18" G+R CVG8 R+R RC PRIMED
BXRC18RRMG18" MACHINE GROOVE SHAKES RAW
BXRC18RRMGPG18" MACHINE GROOVED SHAKES
BXRC18TAPERCCA5/8" X 18" RED CEDAR CCA
BDLRC18TAPERFR5/8" RC TAPERSAWN #1 FIRE RET.
BDLRC18TAPERG5/8" GREEN RC TAPERSAWNS
BDLRC18TAPERP5/8" TAPERSAWN PREMIUM RC SHAKE
EACHRC18TE18"RR TEAL EXTRA SANDED FACE RAW
BXRC18TEPGBX TEAL EXTRA SANDED FACE PRIMED
BXRC24HHS24" HEAVY HAND SPLIT RC #1
BDLRC24RR24" R&R RC #1 SHINGLES
BXRC24RRPG24" PRIMED R&R RC #1 SHINGLES
BXRCFCDRC DIAMOND FANCY CUT 18" NATURAL
BXRCFCFRC FANCY CUT FISHSCALE 18"
BX

That is the thick one? As I understand it, there are only two kinds around here, thick or thin. The roofer called the thin ones royal.

Royals are 24" cedar shingles. Only royalty can afford those. You really need to see samples of what is available, cedar is very expensive right now. Check out this site, the names of various shingles/shakes can vary regionally.

https://directcedarsupplies.com/product/1-24in-perfections-blue-label-certigrade/

The old ones were Royal Blue. One before that was royal gold. We replaced a small section in the back with Royal Blue. The roofer couldn’t find matching royal gold. The price for the thick ones wasn’t shockingly high. It is about 30% higher than the royal gold we put the roof 25 years ago.