I'll try and condense things down for you.
NORINCO apparently began developing a 8x8 APC in the 1990s; and the first prototypes started doing road testing in 2006.
In 2008, NORINCO went-semi public and promoted them for export as
VN1.
A year later, in the
60th anniversary of the People's Republic of China Military Parade in 2009; a lot were seen and it was later disclosed that the 162nd Division in the Jinan Military Region got a few of them in June 2009; and generally many sources gave it the designation ZBL-09. (aka Type 09) family.
But then we have a Chinese language source that says they're actually designated ZBL-08s; and in other sources, I have seen references to "Type 07" (which may have been for a preproduction prototype spotted in 2007).
Wikipedia lists it as the Type 08
https://en.wikipedia.org/wiki/Type_08
And it has spawned a huge amount of subvariants (look at the Wiki)
What I think is causing the confusion is that NORINCO is "rapidly iterating" the basic design -- and is willing to change the chassis/layout more than a typical western company would for each variant.
Known confirmed chassis designs within the family:
IFV Variant (ZBL-08 IFV, PLL-05 Mortar Carrier, PLL-09 SP Howitzer,
ZTL-11 Assault Gun, Assault Breacher [mine plow], Bridge Builder, Armored Recovery Vehicle)
NOTE: I have seen two different designations for the 105mm Assault Gun variant -- ZTL-09 and ZTL-11. Apparently the Chinese Marine Corps got the first mass production assault guns in 2017, and then in 2020, the Regular Army got their assault guns.
APC Variant (taller crew compartment) (ZSL-08 APC, Armored Cargo Vehicle)
Armored Recon Vehicle (Two versions, one appears to use a slightly modified IFV chassis, while another version uses the APC chassis).
Command Variant (even taller crew compartment) (Command Vehicle, Communications Vehicle, Armored Ambulance, NBC Recon Variant, EW Vehicle)
Anti-Air Recon Vehicle (Unique Chassis Variant)
Engineering Vehicle (Unique Chassis Variant)
Other export sales of this chassis family are:
ST-1:
Basically, an export-only variant of the ZTL-11 Assault gun using a 105mm L7 clone. Nigeria had bunch of them delivered in 2020, along with VT-4 MBTs:
https://www.deagel.com/news/n000019796
BEIJING, Apr. 10 -- The first batch of 17 military vehicles consisting of VT-4 main battle tanks (MBT), ST-1 wheeled tank destroyer and two types of self-propelled howitzers bought by the Nigerian Army (NA) from the China North Industries Corporation (NORINCO) arrived at the Apapa Ports on April 8, 2020. The NA made this emergency purchase to strike Boko Haram Terrorists (BHTs) in northern Nigeria.
There's a export version 155mm Howitzer on the chassis (SH-11) but nobody has bought it yet.