The last sound is...

1) ... hissing or hushing (sibilant)

+S=
ɪz
watches, watch's, watches'
🍑
pi
+S=
piɪz
peaches, peach's, peaches'
🪳
roʊ
+S=
roʊɪz
roaches, roach's, roaches'
🚌
s
+S=
sɪz
buses, bus's, buses'
💋
s
+S=
sɪz
kisses, kiss's, kisses'
 
ˈkɑrloʊs
+S=
ˈkɑrloʊsɪz
Carlos's, Carloses'
🐟
ʃ
+S=
ʃɪz
fishes, fish's, fishes'
🪥
brʌʃ
+S=
brʌʃɪz
brushes, brush's, brushes'
🏁
ˈfɪnɪʃ
+S=
ˈfɪnɪʃɪz
finishes, finish's, finishes'
📛
+S=
ɪz
badges, badge's, badges'
📃
peɪ
+S=
peɪɪz
pages, page's, pages'
🏫
ˈkɑlɪ
+S=
ˈkɑlɪɪz
colleges, college's, colleges'
🌉
brɪ
+S=
brɪɪz
bridges, bridge's, bridges'
💆
məˈsɑʒ
+S=
məˈsɑʒɪz
massages, massage's, massages'
 
gəˈrɑʒ
+S=
gəˈrɑʒɪz
garages, garage's, garages'
🌹
roʊz
+S=
roʊzɪz
roses, rose's, roses'
🏆
praɪz
+S=
praɪzɪz
prizes, prize's, prizes'
🥶
friz
+S=
frizɪz
freeze -- freezes

2) ... voiced, vibrating, buzzy:

👩
ʃi
+S=
ʃiz
she -- she's
👨
hi
+S=
hiz
he -- his, he's
🔑
ki
+S=
kiz
key -- keys, key's, keys'
 
məˈriə
+S=
məˈriəz
Maria -- Marias, Maria's, Marias'
 
ˈbrʌðɚ
+S=
ˈbrʌðɚz
brother -- brothers, brother's, brothers'
0️⃣
ˈzir
+S=
ˈzirz
zero -- zeros, zero's, zeros'
 
d
+S=
dz
day -- days, day's, days'
👟
ʃu
+S=
ʃuz
shoe -- shoes, shoe's, shoes'
🐄
k
+S=
kz
cow -- cows, cow's, cows'
👦
bɔɪ
+S=
bɔɪz
boy -- boys, boy's, boys'
 
dʒɪm
+S=
dʒɪmz
Jims, Jim's, Jims'
 
m
+S=
mz
moms, mom's
 
n
+S=
nz
Bens, Ben's, Bens'
🖊️
n
+S=
nz
pens, pen's, pens'
💍
ŋ
+S=
ŋz
rings, ring's, rings'
🚗
r
+S=
rz
cars, car's, cars'
l
+S=
lz
balls, ball's, balls'
 
dʒɑb
+S=
dʒɑbz
jobs, job's, jobs'
 
d
+S=
dz
dads, dad's, dads'
 
d
+S=
dz
kids, kid's, kids'
🐕
g
+S=
gz
dogs, dog's, dogs'
 
slɑv
+S=
slɑvz
Slavs, Slav's, Slavs'
 
beɪð
+S=
beɪðz
bathes

3) ... voiceless, whispery, quiet:

 
dʒæk
+S=
dʒæks
Jacks, Jack's, Jacks'
📖
k
+S=
ks
books, book's
 
ɪt
+S=
ɪts
its, it's
🐈
t
+S=
ts
cats, cat's, cats'
p
+S=
ps
cups, cup's
 
f
+S=
fs
cuffs, cuff's
 
θ
+S=
θs
myths, myth's