[alias]
    tree = log --oneline --decorate --graph
    ls = log --graph --pretty='%C(yellow)%h %ad%Cred%d %Creset%s%Cblue [%cn]' --abbrev-commit --date=short
    authors = shortlog -s -n -e
[commit]
    gpgsign = true

Here's mine:

[user]
    name = stephan281094
    email = ...
    signingkey = ...
[push]
    default = simple
[filter "media"]
    clean = git-media-clean %f
    smudge = git-media-smudge %f
[core]
    excludesfile = ~/.gitignore_global
    pager = diff-so-fancy | less --tabs=4 -RFX
[alias]
    br = branch
    co = checkout
    c = commit
    d = diff
    f = fetch
    p = push
    s = status
    st = status

As you can see I'm using diff-so-fancy for displaying beautiful diffs!

[name]
    ...
    ...
[filter "lfs"]
    clean = git-lfs clean %f
    smudge = git-lfs smudge %f
    required = true
[mergetool]
    keepBackup = true

I don't remember when I created that file nor do I remember yet what problem I tried to solve but this is the content of my git config here at home. Maybe I just copied and pasted the values from kaleidoscope support web page because that is my merge tool on macOS.

[user]
    name = Mike Sprague
    email = ...
    signingkey = ...
[core]
    symlinks = true
    autocrlf = true
    longpaths = true
[alias]
    co = checkout
    st = status
    br = branch
    ci = commit
    cia = commit --amend
    hist = log --pretty=format:\"%h %ad | %s%d [%an]\" --graph --date=short
    s = status -s
    lg = log --oneline --decorate --all --graph
    pom = push origin master
[filter "lfs"]
    required = true
    clean = git-lfs clean %f
    smudge = git-lfs smudge %f
[pull]
    rebase = true
[rerere]
    enabled = true
[color]
    ui = true
[commit]
    gpgsign = true

Here is an excerpt of my .gitconfig

[alias]
last = log -1 --stat
cp = cherry-pick
co = checkout
cl = clone
cb = checkout -b
ci = commit
st = status -sb
br = branch
unstage = reset HEAD --
dc = diff --cached
lg = log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %Cblue<%an>%Creset' --abbrev-commit --date=relative --all
ca = commit --amend
hist = log --pretty=format:'%h %ad | %s%d [%an]' --graph --date=short
type = cat-file -t
dump = cat-file -p
ls = log --pretty=format:"%C(yellow)%h%Cred%d\\ %Creset%s%Cblue\\ [%cn]" --decorate