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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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I just use ssh keys and put aliases for IP addresses in my ~/.ssh/config. For example:
Host router
HostName 192.168.1.1
User admin
Port 227
IdentityFile ~/.ssh/id_ed25519
That way I can just type ssh router everything works out.
This is what I do as well. A nice benefit of this approach is that other commands and applications that use ssh work as well.. scp, rsync, TRAMP in Emacs, management tools, shell scripts etc.
Personally, I use dedicated tmux sessions predefined with various SSH commands.
But in general, if you're not using ~/.ssh/config then you're making your life more difficult.
If you wanted something a little more graphical, I have coworkers that use various configurations of Dmenu. They press a hot key and the menu displays a list of all SSH profiles in your config. They can pick one, press enter, and a terminal opens with the connection already in the process of being established.
I've been using terminus for that on other platforms, and it does seem like there's a Linux varient