Recommendations for a SF squad-level skirmish game?

[Easy E]

Stargrave? Pulp Alley? 5 Parsecs from Home? 

These are Model-vs-Model games, not Squad vs. Squad games.  OP, I recommend you take a close look at any or the rulesest mentioned before making a blind purchase to ensure it is meeting your criteria.   

That said, a few squads vs a few other squads and maybe a vehicle of two? 

Some thoughts with reviews:
 
- Xeno Rampant
https://bloodandspectacles.blogspot.com/2023/02/review-xenos-rampant-osprey-games.html

- Rogue Planet
https://bloodandspectacles.blogspot.com/2020/07/review-rogue-planet-bombshell.html

- Restless Stars
Battle actually, not a review: https://bloodandspectacles.blogspot.com/2023/02/restless-stars-operation-hemlock.html

- Tomorrow's War
https://bloodandspectacles.blogspot.com/2017/03/review-tomorrows-warforce-on-force.html

Some I have not played and have no reviews of:
- 5Core- Nordic Weasel- (IIRC)
- Fistful of Lead- Bigger Battles
- Gruntz (15mm)
- Stargrunt II - I played it a long time ago, so no review
- One Page Rules

[brasidas19004]

I've been using several sets not mentioned:
- Chain Reaction [free]
- 5 Kilometers from Leipzig [free]
- One-Hour Skirmish Wargames
- Neil Thomas "Wargaming an Introduction" has a simple skirmish game
- Battlespace
- "In Country: Recon" is excellent and [free], here: https://esspod.shop/products/inx-rulebooks
It is a contemporary combat game.

[6mmfan]

A couple of indy options are
Planet 28
Space Weirdos

Both are toolkits and you build/develop your own characters