According to web,tagbar config need add other labels.
ctags --list-kinds-full=SystemVerilog
#LETTER NAME ENABLED REFONLY NROLES MASTER DESCRIPTION
A assert yes no 0 NONE assertions (assert, assume, cover, restrict)
C class yes no 0 NONE classes
E enum yes no 0 NONE enumerators
H checker yes no 0 NONE checkers
I interface yes no 0 NONE interfaces
K package yes no 0 NONE packages
L clocking yes no 0 NONE clocking
M modport yes no 0 NONE modports
N nettype yes no 0 NONE nettype declarations
O constraint yes no 0 NONE constraints
P program yes no 0 NONE programs
Q prototype no no 0 NONE prototypes (extern, pure)
R property yes no 0 NONE properties
S struct yes no 0 NONE structs and unions
T typedef yes no 0 NONE type declarations
V covergroup yes no 0 NONE covergroups
b block yes no 0 NONE blocks (begin, fork)
c constant yes no 0 NONE constants (parameter, specparam, enum values)
d define yes no 0 NONE text macros
e event yes no 0 NONE events
f function yes no 0 NONE functions
i instance yes no 0 NONE instances of module or interface
l ifclass yes no 0 NONE interface class
m module yes no 0 NONE modules
n net yes no 0 NONE net data types
p port yes no 0 NONE ports
q sequence yes no 0 NONE sequences
r register yes no 0 NONE variable data types
t task yes no 0 NONE tasks
w member yes no 0 NONE struct and union members
According to web,tagbar config need add other labels.