All unique ticks:
$$$$
$.ai
$.io
$777
$786
$8$8
$98k
$amc
$amp
$ani
$ape
$bcc
$bel
$ber
$bil
$bnb
$boa
$bob
$brd
$btc
$byd
$c-4
$cdh
$cmc
$cr7
$dg2
$dmp
$dna
$dog
$don
$drc
$egg
$eth
$evo
$fud
$gme
$hub
$hup
$hwl
$imf
$joe
$kek
$ket
$kmr
$lky
$lpc
$lyz
$m0g
$mob
$moo
$mvp
$nba
$pii
$pog
$ps4
$rar
$rck
$scf
$sex
$sol
$spx
$sun
$trx
$ufc
$usa
$usd
$vip
$wen
$wif
$wjk
$wow
$xai

Combining data from multiple sources (official directories, stock screeners, and listings), here is the full deduplicated, alphabetically sorted list of all known active 4-letter tickers across NASDAQ, NYSE, and AMEX. Note: This excludes inactive/historical ones, ETFs/funds with suffixes, and non-letter symbols. The total is approximately 2,800, dominated by NASDAQ.

Come join the 24/7/365 space and talk about anything, but center it around Do Only Good Everyday $DOGE

Ohhhh testy

There is a way to look at which doge maps are in a dogemap pack. You can use Grok, python and selenium to scrape the API from Doggy.Market to help you sort what you want, but this is the visual tutorial of what you can be looking at. 

Go to Doggy.Market and open the developer console, in firefox i press crtl + alt + C. Click on the Network tab. 

This is currently the best and cheapest option to inscribe on Doge unless you're running your own node and creating your own transactions. Created by Heimdall, you can visit the page at Inscribe.Doginals.Org