[Google Pixel 3a XL Accessories] jppowers:
Thanks for getting this started, tlxxxsracer! I'm going to mimic your format to the best of my ability. I'm going to include a Comments line as I don't have images or videos to link to.

Yocktec Screen Protector

https://smile.amazon.com/gp/product/B07QTZ9XPP/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1

Comments: I gave this a 3 star rating. It's acceptable as a "until I get a better one" protector but not one I'd consider for long term.

Pro's:

Feels like decent quality glass for the price (strength, clarity, etc.)

Simple installation

Well gapped for a case

Con's:

Bad edge lifting/poor contact

Not particularly cheap given it's just one in the box

Somewhat difficult to line up given how the glass it cut for the front camera/speaker.

UniqueMe Screen Protector (3 Pack)

https://smile.amazon.com/gp/product/B07QKCFS9N/ref=ppx_yo_dt_b_asin_title_o02_s01?ie=UTF8&psc=1

Comments: I opened this and immediately filed for a return. I laid one of the 3 pack onto my screen and it was too large to work with most cases, and part of the edge was going to go over the slight curve on the edge of the glass. Not worth even trying.

Pro's:

N/A, didn't even try

Con's:

Too large, will almost certainly lift off at the edges

L K Screen Protector (3 Pack)

https://smile.amazon.com/gp/product/B07NM4MRFQ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Comments: What's currently on my phone. First to install had two large air bubbles because I just kind of threw it on there as I'm used to doing with most tempered glass protectors, second I went slower and it's good. There is some slight lifting on the edge in a couple of spots, and small air bubbles in the regions that the protector covers but aren't part of the actual visible screen. I'm going to stick with this until some of the bigger name brands start releasing stuff, namely second versions as the first go is rarely great, and keep the third of the pack as a backup.

Pro's:

Cheap

Quality is good. Feels strong, clarity is nice, etc.

Good coverage of screen while still allowing enough of a gap for cases to fit.

Con's:

Installation isn't as easy as I'm used to. I don't think it's a "designed to be installed how we show" you kind of thing, just a bit finicky. (Note: Not actually difficult, just go slow and follow the video they link you to in the box)

Related to above, I feel like their instructions will inevitably waste at least one protector for most users as there will be dust and/or air bubbles collected this way. You're not likely going to get it perfect on your first go. (Note: Which is why a lot of people will read this and think, "well that's why they include 3, dummy" which is a fair point, but I wanted to bring it up)

Very slight edge lift

Glass it cut so between camera and speaker there is a large exposed area (Note: doesn't bother me personally, but I know some people don't like that)

Supershieldz 3 Pack

https://smile.amazon.com/gp/product/B07Q1KCT3M/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1

Comments: Didn't install. Looks very similar to the L K tempered glass in size, but based on Caebron's comments below I figure it's not removing the L K I have on to try.

Space held for Supershieldz commentary

I've got a 3 Pack of these coming in the mail tomorrow. I know a lot of people like Supershieldz but I haven't liked a single one I've gotten. I got them mostly to see if I just got bad ones in the past or if everyone's just crazy. Unlikely to install it given that the L K's nice, but I'll comment on them.