Quick test I've done with some popular frameworks. I wonder if minification affects to parsing speed.
+--------------------------+---------+---------+---------+--------+
| Library | Size | gzip -1 | gzip -9 | brotli |
+--------------------------+---------+---------+---------+--------+
| bootstrap.css | 280813 | 47312 | 33109 | 24533 |
| bootstrap.min.css | 232948 | 42003 | 30776 | 22695 |
| react.development.js | 87574 | 28733 | 23513 | 19818 |
| react.development.min.js | 25612 | 10217 | 9224 | 8052 |
| tailwind-2.2.19.css | 3642321 | 376787 | 304100 | 82049 |
| tailwind-2.2.19.min.css | 2934019 | 354063 | 294632 | 72803 |
| vue.global.js | 476920 | 134655 | 105130 | 87121 |
| vue.global.min.js | 167898 | 74769 | 65582 | 57922 |
+--------------------------+---------+---------+---------+--------+
Edit: something important to note: some frameworks (e.g. React) have lots of comments on their un-minified versions, that are removed when minified. That affects their size greatly.